./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array23_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/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_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array23_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/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_22805936-249d-4e01-9605-87f7b5a10509/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 e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:06:22,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:06:22,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:06:22,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:06:22,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:06:22,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:06:22,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:06:22,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:06:22,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:06:22,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:06:22,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:06:22,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:06:22,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:06:22,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:06:22,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:06:22,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:06:22,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:06:22,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:06:22,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:06:22,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:06:22,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:06:22,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:06:22,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:06:22,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:06:22,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:06:22,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:06:22,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:06:22,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:06:22,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:06:22,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:06:22,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:06:22,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:06:22,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:06:22,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:06:22,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:06:22,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:06:22,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:06:22,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:06:22,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:06:22,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:06:22,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:06:22,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:06:22,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:06:22,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:06:22,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:06:22,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:06:22,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:06:22,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:06:22,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:06:22,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:06:22,693 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:06:22,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:06:22,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:06:22,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:06:22,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:06:22,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:06:22,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:06:22,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:06:22,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:06:22,694 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:06:22,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:06:22,694 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:06:22,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:06:22,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:06:22,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:06:22,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:06:22,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:06:22,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:06:22,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:06:22,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:06:22,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:06:22,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:06:22,695 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:06:22,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:06:22,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:06:22,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:06:22,696 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_22805936-249d-4e01-9605-87f7b5a10509/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2021-12-06 20:06:22,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:06:22,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:06:22,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:06:22,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:06:22,885 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:06:22,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-patterns/array23_pattern.c [2021-12-06 20:06:22,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/data/61e8236fe/cb4b96fd19af4bedbe65efd2284e7a35/FLAG2167b6a6b [2021-12-06 20:06:23,342 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:06:23,342 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/sv-benchmarks/c/array-patterns/array23_pattern.c [2021-12-06 20:06:23,347 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/data/61e8236fe/cb4b96fd19af4bedbe65efd2284e7a35/FLAG2167b6a6b [2021-12-06 20:06:23,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/data/61e8236fe/cb4b96fd19af4bedbe65efd2284e7a35 [2021-12-06 20:06:23,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:06:23,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:06:23,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:06:23,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:06:23,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:06:23,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798922cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23, skipping insertion in model container [2021-12-06 20:06:23,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:06:23,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:06:23,495 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_22805936-249d-4e01-9605-87f7b5a10509/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2021-12-06 20:06:23,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:06:23,516 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:06:23,525 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_22805936-249d-4e01-9605-87f7b5a10509/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2021-12-06 20:06:23,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:06:23,543 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:06:23,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23 WrapperNode [2021-12-06 20:06:23,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:06:23,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:06:23,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:06:23,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:06:23,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,571 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2021-12-06 20:06:23,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:06:23,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:06:23,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:06:23,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:06:23,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:06:23,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:06:23,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:06:23,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:06:23,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (1/1) ... [2021-12-06 20:06:23,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:06:23,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:23,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:23,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:06:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-12-06 20:06:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-12-06 20:06:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:06:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 20:06:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 20:06:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:06:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:06:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:06:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:06:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:06:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:06:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:06:23,700 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:06:23,701 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:06:23,834 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:06:23,839 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:06:23,839 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 20:06:23,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:06:23 BoogieIcfgContainer [2021-12-06 20:06:23,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:06:23,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:06:23,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:06:23,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:06:23,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:06:23" (1/3) ... [2021-12-06 20:06:23,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11244cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:06:23, skipping insertion in model container [2021-12-06 20:06:23,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:23" (2/3) ... [2021-12-06 20:06:23,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11244cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:06:23, skipping insertion in model container [2021-12-06 20:06:23,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:06:23" (3/3) ... [2021-12-06 20:06:23,847 INFO L111 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2021-12-06 20:06:23,852 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:06:23,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:06:23,888 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:06:23,893 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 20:06:23,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:06:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:06:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 20:06:23,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:06:23,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:06:23,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:06:23,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1798908762, now seen corresponding path program 1 times [2021-12-06 20:06:23,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:23,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571370780] [2021-12-06 20:06:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:23,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:06:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:06:24,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:06:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571370780] [2021-12-06 20:06:24,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571370780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:06:24,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:06:24,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:06:24,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317196321] [2021-12-06 20:06:24,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:06:24,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:06:24,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:06:24,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:06:24,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:06:24,089 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 20:06:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:06:24,107 INFO L93 Difference]: Finished difference Result 79 states and 117 transitions. [2021-12-06 20:06:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:06:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 20:06:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:06:24,115 INFO L225 Difference]: With dead ends: 79 [2021-12-06 20:06:24,115 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 20:06:24,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:06:24,120 INFO L933 BasicCegarLoop]: 51 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, 51 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:06:24,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:06:24,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 20:06:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-06 20:06:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:06:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2021-12-06 20:06:24,151 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 15 [2021-12-06 20:06:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:06:24,152 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2021-12-06 20:06:24,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 20:06:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2021-12-06 20:06:24,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 20:06:24,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:06:24,155 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:06:24,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:06:24,155 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:06:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1909329698, now seen corresponding path program 1 times [2021-12-06 20:06:24,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:24,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042574737] [2021-12-06 20:06:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:24,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:24,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:06:24,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530058533] [2021-12-06 20:06:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:24,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:24,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:24,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:06:24,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:06:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:24,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:06:24,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 20:06:24,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:06:24,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:06:24,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042574737] [2021-12-06 20:06:24,376 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:06:24,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530058533] [2021-12-06 20:06:24,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530058533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:06:24,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:06:24,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:06:24,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132456293] [2021-12-06 20:06:24,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:06:24,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:06:24,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:06:24,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:06:24,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:06:24,380 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:06:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:06:24,404 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-12-06 20:06:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:06:24,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-06 20:06:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:06:24,406 INFO L225 Difference]: With dead ends: 44 [2021-12-06 20:06:24,407 INFO L226 Difference]: Without dead ends: 40 [2021-12-06 20:06:24,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:06:24,409 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:06:24,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:06:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-06 20:06:24,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-12-06 20:06:24,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:06:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-12-06 20:06:24,418 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 42 [2021-12-06 20:06:24,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:06:24,419 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-12-06 20:06:24,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:06:24,419 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2021-12-06 20:06:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 20:06:24,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:06:24,421 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:06:24,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:06:24,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:24,623 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:06:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1786751912, now seen corresponding path program 1 times [2021-12-06 20:06:24,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:24,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534951219] [2021-12-06 20:06:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:24,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:24,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:06:24,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898944065] [2021-12-06 20:06:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:24,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:24,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:24,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:06:24,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:06:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:24,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:06:24,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 20:06:24,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:06:24,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:06:24,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534951219] [2021-12-06 20:06:24,912 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:06:24,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898944065] [2021-12-06 20:06:24,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898944065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:06:24,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:06:24,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:06:24,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792946609] [2021-12-06 20:06:24,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:06:24,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:06:24,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:06:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:06:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:06:24,915 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:06:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:06:24,994 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2021-12-06 20:06:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:06:24,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2021-12-06 20:06:24,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:06:24,995 INFO L225 Difference]: With dead ends: 83 [2021-12-06 20:06:24,995 INFO L226 Difference]: Without dead ends: 50 [2021-12-06 20:06:24,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:06:24,997 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 25 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:06:24,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 128 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:06:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-06 20:06:25,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-12-06 20:06:25,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:06:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-12-06 20:06:25,003 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 47 [2021-12-06 20:06:25,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:06:25,004 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-12-06 20:06:25,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:06:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-12-06 20:06:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 20:06:25,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:06:25,005 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:06:25,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:06:25,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:25,207 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:06:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2075657686, now seen corresponding path program 1 times [2021-12-06 20:06:25,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:25,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266085217] [2021-12-06 20:06:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:25,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:25,251 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:06:25,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799790429] [2021-12-06 20:06:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:25,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:25,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:25,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:06:25,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:06:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:25,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:06:25,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 20:06:25,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:06:25,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:06:25,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266085217] [2021-12-06 20:06:25,447 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:06:25,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799790429] [2021-12-06 20:06:25,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799790429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:06:25,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:06:25,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:06:25,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196148753] [2021-12-06 20:06:25,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:06:25,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:06:25,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:06:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:06:25,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:06:25,449 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:06:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:06:25,487 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2021-12-06 20:06:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:06:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2021-12-06 20:06:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:06:25,488 INFO L225 Difference]: With dead ends: 80 [2021-12-06 20:06:25,489 INFO L226 Difference]: Without dead ends: 44 [2021-12-06 20:06:25,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:06:25,490 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 28 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:06:25,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 77 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:06:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-06 20:06:25,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-12-06 20:06:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:06:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-12-06 20:06:25,498 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 50 [2021-12-06 20:06:25,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:06:25,499 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-12-06 20:06:25,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:06:25,499 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2021-12-06 20:06:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 20:06:25,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:06:25,500 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:06:25,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:06:25,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:25,702 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:06:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:25,704 INFO L85 PathProgramCache]: Analyzing trace with hash 874891816, now seen corresponding path program 1 times [2021-12-06 20:06:25,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:25,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486880744] [2021-12-06 20:06:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:25,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:25,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:06:25,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309311124] [2021-12-06 20:06:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:25,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:25,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:25,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:06:25,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:06:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:25,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:06:25,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 20:06:25,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:06:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 20:06:26,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:06:26,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486880744] [2021-12-06 20:06:26,082 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:06:26,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309311124] [2021-12-06 20:06:26,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309311124] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:06:26,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:06:26,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-12-06 20:06:26,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967913585] [2021-12-06 20:06:26,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:06:26,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:06:26,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:06:26,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:06:26,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:06:26,085 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:06:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:06:26,173 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2021-12-06 20:06:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 20:06:26,174 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2021-12-06 20:06:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:06:26,174 INFO L225 Difference]: With dead ends: 87 [2021-12-06 20:06:26,174 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 20:06:26,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:06:26,176 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 45 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:06:26,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 92 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:06:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 20:06:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-12-06 20:06:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:06:26,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-12-06 20:06:26,182 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 52 [2021-12-06 20:06:26,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:06:26,182 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-12-06 20:06:26,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:06:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-12-06 20:06:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 20:06:26,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:06:26,183 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:06:26,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 20:06:26,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:26,385 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:06:26,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1211966936, now seen corresponding path program 2 times [2021-12-06 20:06:26,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:26,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792376146] [2021-12-06 20:06:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:26,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:26,436 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:06:26,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770537689] [2021-12-06 20:06:26,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:06:26,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:26,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:26,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:06:26,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:06:26,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:06:26,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:06:26,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:06:26,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 20:06:26,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:06:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 20:06:26,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:06:26,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792376146] [2021-12-06 20:06:26,686 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:06:26,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770537689] [2021-12-06 20:06:26,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770537689] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:06:26,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:06:26,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-06 20:06:26,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263711737] [2021-12-06 20:06:26,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:06:26,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:06:26,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:06:26,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:06:26,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:06:26,688 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:06:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:06:26,820 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2021-12-06 20:06:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:06:26,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2021-12-06 20:06:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:06:26,821 INFO L225 Difference]: With dead ends: 108 [2021-12-06 20:06:26,821 INFO L226 Difference]: Without dead ends: 75 [2021-12-06 20:06:26,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:06:26,823 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:06:26,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 151 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:06:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-06 20:06:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-12-06 20:06:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:06:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2021-12-06 20:06:26,833 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 56 [2021-12-06 20:06:26,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:06:26,834 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2021-12-06 20:06:26,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:06:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2021-12-06 20:06:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 20:06:26,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:06:26,835 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:06:26,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 20:06:27,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:27,037 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:06:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash -511912674, now seen corresponding path program 3 times [2021-12-06 20:06:27,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:27,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51235089] [2021-12-06 20:06:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:27,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:27,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:06:27,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410214829] [2021-12-06 20:06:27,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:06:27,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:27,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:27,083 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:06:27,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:06:27,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-06 20:06:27,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:06:27,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 101 conjunts are in the unsatisfiable core [2021-12-06 20:06:27,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:28,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 20:06:28,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 20:06:28,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 20:06:28,148 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 71 treesize of output 64 [2021-12-06 20:06:28,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:28,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 85 [2021-12-06 20:06:28,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2021-12-06 20:06:28,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,213 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 55 treesize of output 22 [2021-12-06 20:06:28,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 67 [2021-12-06 20:06:28,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,390 INFO L354 Elim1Store]: treesize reduction 78, result has 14.3 percent of original size [2021-12-06 20:06:28,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 88 [2021-12-06 20:06:28,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,421 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 40 treesize of output 19 [2021-12-06 20:06:28,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,460 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 48 treesize of output 23 [2021-12-06 20:06:28,641 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 145 treesize of output 128 [2021-12-06 20:06:28,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 185 [2021-12-06 20:06:28,676 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:06:28,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:28,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 63 [2021-12-06 20:06:29,725 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 107 treesize of output 94 [2021-12-06 20:06:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,864 INFO L354 Elim1Store]: treesize reduction 187, result has 44.2 percent of original size [2021-12-06 20:06:29,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 244 [2021-12-06 20:06:29,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,910 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 49 treesize of output 15 [2021-12-06 20:06:29,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:29,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:30,000 INFO L354 Elim1Store]: treesize reduction 5, result has 76.2 percent of original size [2021-12-06 20:06:30,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 34 [2021-12-06 20:06:30,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:30,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:30,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:30,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:30,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:30,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:30,058 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 51 treesize of output 15 [2021-12-06 20:06:38,426 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 295 treesize of output 276 [2021-12-06 20:06:38,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:38,965 INFO L354 Elim1Store]: treesize reduction 294, result has 41.0 percent of original size [2021-12-06 20:06:38,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 25 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 279 treesize of output 611 [2021-12-06 20:06:39,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:06:40,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:40,531 INFO L354 Elim1Store]: treesize reduction 91, result has 1.1 percent of original size [2021-12-06 20:06:40,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 427 treesize of output 351 [2021-12-06 20:06:42,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:42,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:42,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,470 INFO L244 Elim1Store]: Index analysis took 106 ms [2021-12-06 20:06:42,510 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:06:42,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 1117 treesize of output 763 [2021-12-06 20:06:42,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:42,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:42,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:42,611 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:06:42,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 20 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 797 treesize of output 586 [2021-12-06 20:06:53,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:53,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:53,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:53,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:06:53,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:06:53,678 INFO L354 Elim1Store]: treesize reduction 245, result has 52.4 percent of original size [2021-12-06 20:06:53,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 40 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 506 treesize of output 410 [2021-12-06 20:06:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:06:55,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:07:43,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:43,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51235089] [2021-12-06 20:07:43,573 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410214829] [2021-12-06 20:07:43,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410214829] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:07:43,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:07:43,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-12-06 20:07:43,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598167270] [2021-12-06 20:07:43,573 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:07:43,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-06 20:07:43,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:43,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-06 20:07:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=3186, Unknown=12, NotChecked=0, Total=3660 [2021-12-06 20:07:43,576 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 42 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:07:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:45,067 INFO L93 Difference]: Finished difference Result 143 states and 177 transitions. [2021-12-06 20:07:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 20:07:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 70 [2021-12-06 20:07:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:45,071 INFO L225 Difference]: With dead ends: 143 [2021-12-06 20:07:45,071 INFO L226 Difference]: Without dead ends: 139 [2021-12-06 20:07:45,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=509, Invalid=3511, Unknown=12, NotChecked=0, Total=4032 [2021-12-06 20:07:45,073 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 63 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 520 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:45,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 551 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 397 Invalid, 0 Unknown, 520 Unchecked, 0.8s Time] [2021-12-06 20:07:45,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-06 20:07:45,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 108. [2021-12-06 20:07:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 92 states have (on average 1.2065217391304348) internal successors, (111), 92 states have internal predecessors, (111), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2021-12-06 20:07:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2021-12-06 20:07:45,094 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 70 [2021-12-06 20:07:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:45,094 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2021-12-06 20:07:45,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:07:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2021-12-06 20:07:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 20:07:45,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:45,096 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:45,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 20:07:45,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:45,297 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:45,297 INFO L85 PathProgramCache]: Analyzing trace with hash -293057956, now seen corresponding path program 1 times [2021-12-06 20:07:45,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:45,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960391735] [2021-12-06 20:07:45,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:45,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:45,307 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:45,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12280722] [2021-12-06 20:07:45,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:45,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:45,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:45,308 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:45,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 20:07:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:45,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:07:45,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 20:07:45,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:07:45,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:45,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960391735] [2021-12-06 20:07:45,399 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:45,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12280722] [2021-12-06 20:07:45,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12280722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:07:45,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:07:45,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:07:45,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499976020] [2021-12-06 20:07:45,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:07:45,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:07:45,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:45,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:07:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:07:45,401 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 20:07:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:45,417 INFO L93 Difference]: Finished difference Result 153 states and 186 transitions. [2021-12-06 20:07:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:07:45,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 70 [2021-12-06 20:07:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:45,419 INFO L225 Difference]: With dead ends: 153 [2021-12-06 20:07:45,419 INFO L226 Difference]: Without dead ends: 113 [2021-12-06 20:07:45,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:07:45,421 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:45,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 130 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:07:45,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-06 20:07:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2021-12-06 20:07:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 95 states have internal predecessors, (113), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-06 20:07:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2021-12-06 20:07:45,436 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 70 [2021-12-06 20:07:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:45,436 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2021-12-06 20:07:45,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 20:07:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2021-12-06 20:07:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 20:07:45,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:45,438 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:45,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 20:07:45,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 20:07:45,639 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:45,641 INFO L85 PathProgramCache]: Analyzing trace with hash -480892867, now seen corresponding path program 1 times [2021-12-06 20:07:45,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:45,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657767390] [2021-12-06 20:07:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:45,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:45,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:45,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518995046] [2021-12-06 20:07:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:45,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:45,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:45,675 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:45,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 20:07:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:45,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:07:45,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 20:07:45,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:07:45,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:45,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657767390] [2021-12-06 20:07:45,778 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:45,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518995046] [2021-12-06 20:07:45,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518995046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:07:45,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:07:45,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:07:45,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142003226] [2021-12-06 20:07:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:07:45,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:07:45,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:45,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:07:45,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:07:45,779 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 20:07:45,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:45,799 INFO L93 Difference]: Finished difference Result 157 states and 189 transitions. [2021-12-06 20:07:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:07:45,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 70 [2021-12-06 20:07:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:45,800 INFO L225 Difference]: With dead ends: 157 [2021-12-06 20:07:45,800 INFO L226 Difference]: Without dead ends: 113 [2021-12-06 20:07:45,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:07:45,801 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 1 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:45,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 141 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:07:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-06 20:07:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2021-12-06 20:07:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 95 states have internal predecessors, (112), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-06 20:07:45,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2021-12-06 20:07:45,812 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 70 [2021-12-06 20:07:45,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:45,812 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2021-12-06 20:07:45,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 20:07:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2021-12-06 20:07:45,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 20:07:45,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:45,813 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:45,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 20:07:46,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:46,015 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:46,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash -262038149, now seen corresponding path program 1 times [2021-12-06 20:07:46,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:46,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825036387] [2021-12-06 20:07:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:46,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:46,049 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:46,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317193122] [2021-12-06 20:07:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:46,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:46,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:46,052 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:46,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 20:07:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:46,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 20:07:46,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 20:07:46,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:07:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-06 20:07:46,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:46,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825036387] [2021-12-06 20:07:46,300 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:46,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317193122] [2021-12-06 20:07:46,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317193122] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:07:46,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:07:46,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2021-12-06 20:07:46,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081135488] [2021-12-06 20:07:46,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:07:46,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:07:46,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:07:46,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:07:46,301 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:07:46,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:46,390 INFO L93 Difference]: Finished difference Result 185 states and 222 transitions. [2021-12-06 20:07:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:07:46,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2021-12-06 20:07:46,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:46,391 INFO L225 Difference]: With dead ends: 185 [2021-12-06 20:07:46,391 INFO L226 Difference]: Without dead ends: 141 [2021-12-06 20:07:46,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:07:46,392 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 25 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:46,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 174 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:07:46,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-06 20:07:46,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 118. [2021-12-06 20:07:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 100 states have (on average 1.17) internal successors, (117), 99 states have internal predecessors, (117), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2021-12-06 20:07:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 140 transitions. [2021-12-06 20:07:46,403 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 140 transitions. Word has length 70 [2021-12-06 20:07:46,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:46,403 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 140 transitions. [2021-12-06 20:07:46,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:07:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 140 transitions. [2021-12-06 20:07:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 20:07:46,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:46,404 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:46,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 20:07:46,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 20:07:46,606 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash -489280420, now seen corresponding path program 1 times [2021-12-06 20:07:46,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:46,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373141852] [2021-12-06 20:07:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:46,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:46,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:46,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739537678] [2021-12-06 20:07:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:46,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:46,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:46,639 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:46,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 20:07:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:46,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:07:46,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-06 20:07:46,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:07:46,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:46,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373141852] [2021-12-06 20:07:46,751 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:46,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739537678] [2021-12-06 20:07:46,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739537678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:07:46,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:07:46,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:07:46,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810050221] [2021-12-06 20:07:46,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:07:46,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:07:46,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:46,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:07:46,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:07:46,752 INFO L87 Difference]: Start difference. First operand 118 states and 140 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:07:46,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:46,766 INFO L93 Difference]: Finished difference Result 168 states and 200 transitions. [2021-12-06 20:07:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:07:46,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2021-12-06 20:07:46,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:46,767 INFO L225 Difference]: With dead ends: 168 [2021-12-06 20:07:46,767 INFO L226 Difference]: Without dead ends: 118 [2021-12-06 20:07:46,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:07:46,768 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:46,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 130 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:07:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-06 20:07:46,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-12-06 20:07:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 100 states have (on average 1.15) internal successors, (115), 99 states have internal predecessors, (115), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2021-12-06 20:07:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 138 transitions. [2021-12-06 20:07:46,778 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 138 transitions. Word has length 70 [2021-12-06 20:07:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:46,778 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 138 transitions. [2021-12-06 20:07:46,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:07:46,778 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 138 transitions. [2021-12-06 20:07:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 20:07:46,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:46,779 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:46,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 20:07:46,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:46,980 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:46,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash 513579325, now seen corresponding path program 2 times [2021-12-06 20:07:46,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:46,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103816133] [2021-12-06 20:07:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:46,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:47,009 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:47,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487983961] [2021-12-06 20:07:47,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:07:47,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:47,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:47,013 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:47,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 20:07:47,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:07:47,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:07:47,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:07:47,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-06 20:07:47,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:07:47,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:47,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103816133] [2021-12-06 20:07:47,120 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:47,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487983961] [2021-12-06 20:07:47,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487983961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:07:47,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:07:47,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:07:47,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109606215] [2021-12-06 20:07:47,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:07:47,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:07:47,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:47,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:07:47,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:07:47,122 INFO L87 Difference]: Start difference. First operand 118 states and 138 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:07:47,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:47,138 INFO L93 Difference]: Finished difference Result 168 states and 197 transitions. [2021-12-06 20:07:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:07:47,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2021-12-06 20:07:47,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:47,140 INFO L225 Difference]: With dead ends: 168 [2021-12-06 20:07:47,140 INFO L226 Difference]: Without dead ends: 118 [2021-12-06 20:07:47,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:07:47,141 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 1 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:47,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 141 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:07:47,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-06 20:07:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-12-06 20:07:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 100 states have (on average 1.14) internal successors, (114), 99 states have internal predecessors, (114), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2021-12-06 20:07:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2021-12-06 20:07:47,155 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 70 [2021-12-06 20:07:47,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:47,155 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2021-12-06 20:07:47,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:07:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2021-12-06 20:07:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 20:07:47,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:47,156 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:47,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 20:07:47,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:47,357 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:47,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash 536211579, now seen corresponding path program 1 times [2021-12-06 20:07:47,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:47,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750288864] [2021-12-06 20:07:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:47,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:47,371 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:47,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638525889] [2021-12-06 20:07:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:47,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:47,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:47,373 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:47,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 20:07:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:47,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 20:07:47,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 20:07:47,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:07:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-06 20:07:47,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:47,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750288864] [2021-12-06 20:07:47,623 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:47,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638525889] [2021-12-06 20:07:47,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638525889] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:07:47,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:07:47,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2021-12-06 20:07:47,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474300933] [2021-12-06 20:07:47,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:07:47,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:07:47,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:07:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:07:47,624 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:07:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:47,724 INFO L93 Difference]: Finished difference Result 193 states and 224 transitions. [2021-12-06 20:07:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:07:47,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2021-12-06 20:07:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:47,726 INFO L225 Difference]: With dead ends: 193 [2021-12-06 20:07:47,726 INFO L226 Difference]: Without dead ends: 143 [2021-12-06 20:07:47,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:07:47,727 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 24 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:47,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 237 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:07:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-06 20:07:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 120. [2021-12-06 20:07:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 100 states have internal predecessors, (116), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-06 20:07:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 138 transitions. [2021-12-06 20:07:47,741 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 138 transitions. Word has length 70 [2021-12-06 20:07:47,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:47,741 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 138 transitions. [2021-12-06 20:07:47,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:07:47,742 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 138 transitions. [2021-12-06 20:07:47,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 20:07:47,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:47,743 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:47,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-06 20:07:47,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 20:07:47,944 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:47,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:47,945 INFO L85 PathProgramCache]: Analyzing trace with hash 786086104, now seen corresponding path program 1 times [2021-12-06 20:07:47,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:47,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490878275] [2021-12-06 20:07:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:47,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:47,975 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595272650] [2021-12-06 20:07:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:47,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:47,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:47,978 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:47,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 20:07:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:48,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:07:48,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 20:07:48,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:07:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 20:07:48,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:48,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490878275] [2021-12-06 20:07:48,379 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:48,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595272650] [2021-12-06 20:07:48,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595272650] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:07:48,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:07:48,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2021-12-06 20:07:48,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137422582] [2021-12-06 20:07:48,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:07:48,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 20:07:48,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 20:07:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:07:48,380 INFO L87 Difference]: Start difference. First operand 120 states and 138 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 4 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-06 20:07:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:48,652 INFO L93 Difference]: Finished difference Result 265 states and 303 transitions. [2021-12-06 20:07:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 20:07:48,652 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 4 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 70 [2021-12-06 20:07:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:48,654 INFO L225 Difference]: With dead ends: 265 [2021-12-06 20:07:48,654 INFO L226 Difference]: Without dead ends: 211 [2021-12-06 20:07:48,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:07:48,655 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 115 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:48,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 245 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:07:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-06 20:07:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 168. [2021-12-06 20:07:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 140 states have internal predecessors, (160), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-12-06 20:07:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 191 transitions. [2021-12-06 20:07:48,668 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 191 transitions. Word has length 70 [2021-12-06 20:07:48,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:48,669 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 191 transitions. [2021-12-06 20:07:48,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 4 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-06 20:07:48,669 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 191 transitions. [2021-12-06 20:07:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 20:07:48,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:48,670 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:48,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 20:07:48,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 20:07:48,871 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:48,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:48,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2133417632, now seen corresponding path program 4 times [2021-12-06 20:07:48,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:48,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098920462] [2021-12-06 20:07:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:48,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:48,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:48,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404741483] [2021-12-06 20:07:48,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 20:07:48,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:48,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:48,905 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:48,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 20:07:48,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 20:07:48,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:07:48,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:07:48,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 20:07:49,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:07:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 20:07:49,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:49,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098920462] [2021-12-06 20:07:49,120 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:49,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404741483] [2021-12-06 20:07:49,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404741483] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:07:49,120 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:07:49,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 20:07:49,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059847076] [2021-12-06 20:07:49,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:07:49,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:07:49,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:07:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:07:49,122 INFO L87 Difference]: Start difference. First operand 168 states and 191 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:07:49,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:49,278 INFO L93 Difference]: Finished difference Result 291 states and 338 transitions. [2021-12-06 20:07:49,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:07:49,278 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2021-12-06 20:07:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:49,280 INFO L225 Difference]: With dead ends: 291 [2021-12-06 20:07:49,280 INFO L226 Difference]: Without dead ends: 238 [2021-12-06 20:07:49,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:07:49,281 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 133 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:49,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 172 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:07:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-06 20:07:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 182. [2021-12-06 20:07:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 155 states have (on average 1.1161290322580646) internal successors, (173), 154 states have internal predecessors, (173), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-12-06 20:07:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 204 transitions. [2021-12-06 20:07:49,302 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 204 transitions. Word has length 72 [2021-12-06 20:07:49,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:49,302 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 204 transitions. [2021-12-06 20:07:49,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:07:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 204 transitions. [2021-12-06 20:07:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 20:07:49,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:49,304 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:49,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 20:07:49,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 20:07:49,505 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:49,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:49,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1781876702, now seen corresponding path program 5 times [2021-12-06 20:07:49,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:49,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877951374] [2021-12-06 20:07:49,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:49,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:49,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:49,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919744155] [2021-12-06 20:07:49,536 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 20:07:49,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:49,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:49,539 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:49,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 20:07:50,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-12-06 20:07:50,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:07:50,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:07:50,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 20:07:50,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:07:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 20:07:50,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:50,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877951374] [2021-12-06 20:07:50,875 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:50,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919744155] [2021-12-06 20:07:50,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919744155] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:07:50,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:07:50,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-06 20:07:50,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128699053] [2021-12-06 20:07:50,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:07:50,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 20:07:50,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 20:07:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:07:50,876 INFO L87 Difference]: Start difference. First operand 182 states and 204 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:07:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:51,083 INFO L93 Difference]: Finished difference Result 363 states and 410 transitions. [2021-12-06 20:07:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 20:07:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2021-12-06 20:07:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:51,084 INFO L225 Difference]: With dead ends: 363 [2021-12-06 20:07:51,084 INFO L226 Difference]: Without dead ends: 235 [2021-12-06 20:07:51,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-12-06 20:07:51,085 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 64 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:51,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 227 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:07:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-12-06 20:07:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 197. [2021-12-06 20:07:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 170 states have (on average 1.1235294117647059) internal successors, (191), 169 states have internal predecessors, (191), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-12-06 20:07:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 222 transitions. [2021-12-06 20:07:51,100 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 222 transitions. Word has length 74 [2021-12-06 20:07:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:51,100 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 222 transitions. [2021-12-06 20:07:51,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:07:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 222 transitions. [2021-12-06 20:07:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 20:07:51,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:51,101 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:51,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 20:07:51,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 20:07:51,303 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1668772246, now seen corresponding path program 6 times [2021-12-06 20:07:51,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:51,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186211133] [2021-12-06 20:07:51,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:51,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:51,335 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:51,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85581574] [2021-12-06 20:07:51,336 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 20:07:51,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:51,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:51,338 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:51,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 20:07:51,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-06 20:07:51,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:07:51,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:07:51,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 20:07:51,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:07:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 20:07:51,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:51,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186211133] [2021-12-06 20:07:51,867 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:51,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85581574] [2021-12-06 20:07:51,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85581574] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:07:51,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:07:51,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-06 20:07:51,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379881612] [2021-12-06 20:07:51,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:07:51,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:07:51,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:51,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:07:51,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:07:51,869 INFO L87 Difference]: Start difference. First operand 197 states and 222 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 20:07:52,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:52,067 INFO L93 Difference]: Finished difference Result 261 states and 289 transitions. [2021-12-06 20:07:52,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 20:07:52,068 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2021-12-06 20:07:52,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:52,069 INFO L225 Difference]: With dead ends: 261 [2021-12-06 20:07:52,069 INFO L226 Difference]: Without dead ends: 190 [2021-12-06 20:07:52,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:07:52,070 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 117 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:52,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 211 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:07:52,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-06 20:07:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2021-12-06 20:07:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 155 states have (on average 1.096774193548387) internal successors, (170), 154 states have internal predecessors, (170), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-12-06 20:07:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 201 transitions. [2021-12-06 20:07:52,088 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 201 transitions. Word has length 77 [2021-12-06 20:07:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:52,088 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 201 transitions. [2021-12-06 20:07:52,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 20:07:52,088 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 201 transitions. [2021-12-06 20:07:52,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 20:07:52,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:52,092 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:52,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 20:07:52,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 20:07:52,293 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash 911926688, now seen corresponding path program 7 times [2021-12-06 20:07:52,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:52,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948279095] [2021-12-06 20:07:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:52,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:52,300 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:52,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719147868] [2021-12-06 20:07:52,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 20:07:52,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:52,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:52,301 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:52,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 20:07:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:52,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:07:52,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 42 proven. 40 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 20:07:52,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:07:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 11 proven. 63 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-06 20:07:52,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:52,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948279095] [2021-12-06 20:07:52,504 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:07:52,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719147868] [2021-12-06 20:07:52,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719147868] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:07:52,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:07:52,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 20:07:52,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768212102] [2021-12-06 20:07:52,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:07:52,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:07:52,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:52,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:07:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:07:52,506 INFO L87 Difference]: Start difference. First operand 182 states and 201 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:07:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:07:52,654 INFO L93 Difference]: Finished difference Result 231 states and 251 transitions. [2021-12-06 20:07:52,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:07:52,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2021-12-06 20:07:52,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:07:52,655 INFO L225 Difference]: With dead ends: 231 [2021-12-06 20:07:52,655 INFO L226 Difference]: Without dead ends: 183 [2021-12-06 20:07:52,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:07:52,656 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 142 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:07:52,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 175 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:07:52,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-06 20:07:52,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 174. [2021-12-06 20:07:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 149 states have (on average 1.080536912751678) internal successors, (161), 147 states have internal predecessors, (161), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2021-12-06 20:07:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 190 transitions. [2021-12-06 20:07:52,669 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 190 transitions. Word has length 81 [2021-12-06 20:07:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:52,669 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 190 transitions. [2021-12-06 20:07:52,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:07:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 190 transitions. [2021-12-06 20:07:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 20:07:52,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:52,670 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:52,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-06 20:07:52,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 20:07:52,871 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:52,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1054227458, now seen corresponding path program 1 times [2021-12-06 20:07:52,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:52,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140928693] [2021-12-06 20:07:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:52,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:52,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:07:52,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817089160] [2021-12-06 20:07:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:52,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:07:52,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:07:52,909 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:07:52,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 20:07:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:53,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 123 conjunts are in the unsatisfiable core [2021-12-06 20:07:53,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:07:53,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 20:07:53,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 20:07:53,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 20:07:53,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 72 [2021-12-06 20:07:53,811 INFO L354 Elim1Store]: treesize reduction 148, result has 19.1 percent of original size [2021-12-06 20:07:53,811 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 71 treesize of output 95 [2021-12-06 20:07:53,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:53,821 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 7 [2021-12-06 20:07:53,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 67 [2021-12-06 20:07:53,976 INFO L354 Elim1Store]: treesize reduction 174, result has 12.6 percent of original size [2021-12-06 20:07:53,977 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 66 treesize of output 88 [2021-12-06 20:07:53,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:53,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:53,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:53,989 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 42 treesize of output 19 [2021-12-06 20:07:54,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 68 [2021-12-06 20:07:54,103 INFO L354 Elim1Store]: treesize reduction 256, result has 15.5 percent of original size [2021-12-06 20:07:54,104 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 67 treesize of output 103 [2021-12-06 20:07:54,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:54,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:54,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:54,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:54,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:54,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:07:54,116 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 36 treesize of output 13 [2021-12-06 20:08:24,676 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 107 treesize of output 94 [2021-12-06 20:08:25,390 INFO L354 Elim1Store]: treesize reduction 403, result has 29.8 percent of original size [2021-12-06 20:08:25,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 93 treesize of output 244 [2021-12-06 20:08:26,161 INFO L354 Elim1Store]: treesize reduction 150, result has 22.3 percent of original size [2021-12-06 20:08:26,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 309 treesize of output 279 [2021-12-06 20:09:35,411 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 340 treesize of output 313 [2021-12-06 20:09:37,195 INFO L354 Elim1Store]: treesize reduction 1468, result has 17.6 percent of original size [2021-12-06 20:09:37,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 316 treesize of output 568 [2021-12-06 20:09:37,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:37,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:37,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:37,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:37,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:37,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:37,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:37,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:37,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:37,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:37,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 39 [2021-12-06 20:09:39,506 INFO L354 Elim1Store]: treesize reduction 1176, result has 0.1 percent of original size [2021-12-06 20:09:39,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 902 treesize of output 608 [2021-12-06 20:09:39,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:09:39,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 45 [2021-12-06 20:09:39,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:09:39,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:09:39,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:09:39,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:09:39,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 167 [2021-12-06 20:09:39,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:09:39,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:09:39,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 44 [2021-12-06 20:10:33,501 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 295 treesize of output 258 [2021-12-06 20:10:34,146 INFO L354 Elim1Store]: treesize reduction 1354, result has 16.6 percent of original size [2021-12-06 20:10:34,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 257 treesize of output 391 [2021-12-06 20:10:35,441 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:10:35,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:35,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:35,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:35,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:35,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:35,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:35,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:10:36,032 INFO L354 Elim1Store]: treesize reduction 41, result has 51.2 percent of original size [2021-12-06 20:10:36,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 786 treesize of output 474 [2021-12-06 20:11:51,025 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 753 treesize of output 710 [2021-12-06 20:11:53,506 INFO L354 Elim1Store]: treesize reduction 2204, result has 18.4 percent of original size [2021-12-06 20:11:53,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 713 treesize of output 928 [2021-12-06 20:11:53,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:11:53,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 238 treesize of output 205 [2021-12-06 20:11:53,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:53,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 85 [2021-12-06 20:11:54,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:54,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:54,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:54,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:54,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:54,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:54,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:54,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:54,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:54,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:11:54,289 INFO L354 Elim1Store]: treesize reduction 94, result has 46.9 percent of original size [2021-12-06 20:11:54,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 823 treesize of output 523 [2021-12-06 20:13:09,191 INFO L354 Elim1Store]: treesize reduction 1000, result has 8.2 percent of original size [2021-12-06 20:13:09,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 1128 treesize of output 477 [2021-12-06 20:13:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 22 proven. 87 refuted. 15 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:13:11,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:14:04,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:04,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140928693] [2021-12-06 20:14:04,193 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:14:04,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817089160] [2021-12-06 20:14:04,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817089160] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:14:04,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:14:04,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2021-12-06 20:14:04,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041893936] [2021-12-06 20:14:04,193 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:14:04,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-06 20:14:04,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:04,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-06 20:14:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=4988, Unknown=33, NotChecked=0, Total=5402 [2021-12-06 20:14:04,196 INFO L87 Difference]: Start difference. First operand 174 states and 190 transitions. Second operand has 56 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 52 states have internal predecessors, (80), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-12-06 20:14:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:15,810 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2021-12-06 20:14:15,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-06 20:14:15,811 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 52 states have internal predecessors, (80), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 98 [2021-12-06 20:14:15,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:15,813 INFO L225 Difference]: With dead ends: 221 [2021-12-06 20:14:15,813 INFO L226 Difference]: Without dead ends: 201 [2021-12-06 20:14:15,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2871 ImplicationChecksByTransitivity, 167.3s TimeCoverageRelationStatistics Valid=464, Invalid=6143, Unknown=35, NotChecked=0, Total=6642 [2021-12-06 20:14:15,815 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 88 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 926 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:15,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 809 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 533 Invalid, 0 Unknown, 926 Unchecked, 2.3s Time] [2021-12-06 20:14:15,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-06 20:14:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2021-12-06 20:14:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 166 states have (on average 1.072289156626506) internal successors, (178), 164 states have internal predecessors, (178), 18 states have call successors, (18), 14 states have call predecessors, (18), 13 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2021-12-06 20:14:15,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 215 transitions. [2021-12-06 20:14:15,830 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 215 transitions. Word has length 98 [2021-12-06 20:14:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:15,830 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 215 transitions. [2021-12-06 20:14:15,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 52 states have internal predecessors, (80), 7 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-12-06 20:14:15,830 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 215 transitions. [2021-12-06 20:14:15,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 20:14:15,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:15,831 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:15,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 20:14:16,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:14:16,033 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:14:16,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:16,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1840433384, now seen corresponding path program 8 times [2021-12-06 20:14:16,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:16,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060974766] [2021-12-06 20:14:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:16,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:16,049 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:14:16,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874869596] [2021-12-06 20:14:16,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:14:16,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:14:16,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:14:16,050 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:14:16,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22805936-249d-4e01-9605-87f7b5a10509/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 20:14:17,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:14:17,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:14:17,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 143 conjunts are in the unsatisfiable core [2021-12-06 20:14:17,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:17,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 20:14:17,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 20:14:17,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 20:14:17,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 70 [2021-12-06 20:14:17,931 INFO L354 Elim1Store]: treesize reduction 136, result has 18.6 percent of original size [2021-12-06 20:14:17,932 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 69 treesize of output 91 [2021-12-06 20:14:17,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:17,962 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 46 treesize of output 19 [2021-12-06 20:14:18,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:18,009 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 61 treesize of output 24 [2021-12-06 20:14:18,197 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 93 treesize of output 84 [2021-12-06 20:14:18,288 INFO L354 Elim1Store]: treesize reduction 293, result has 16.8 percent of original size [2021-12-06 20:14:18,289 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 83 treesize of output 122 [2021-12-06 20:14:18,297 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:14:18,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:18,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:18,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:18,348 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 89 treesize of output 40 [2021-12-06 20:14:19,010 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 85 treesize of output 74 [2021-12-06 20:14:19,127 INFO L354 Elim1Store]: treesize reduction 284, result has 12.1 percent of original size [2021-12-06 20:14:19,127 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 73 treesize of output 105 [2021-12-06 20:14:19,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 17 [2021-12-06 20:14:19,544 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 104 treesize of output 91 [2021-12-06 20:14:19,713 INFO L354 Elim1Store]: treesize reduction 496, result has 12.8 percent of original size [2021-12-06 20:14:19,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 90 treesize of output 142 [2021-12-06 20:14:19,771 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:14:19,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:19,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 34 [2021-12-06 20:14:20,327 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 112 treesize of output 97 [2021-12-06 20:14:20,541 INFO L354 Elim1Store]: treesize reduction 630, result has 12.9 percent of original size [2021-12-06 20:14:20,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 96 treesize of output 161 [2021-12-06 20:14:20,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:20,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 53 [2021-12-06 20:14:21,619 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 138 treesize of output 121 [2021-12-06 20:14:21,876 INFO L354 Elim1Store]: treesize reduction 972, result has 12.0 percent of original size [2021-12-06 20:14:21,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 120 treesize of output 208 [2021-12-06 20:14:21,966 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:14:22,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:22,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 35 [2021-12-06 20:14:22,634 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 153 treesize of output 134 [2021-12-06 20:14:22,983 INFO L354 Elim1Store]: treesize reduction 1228, result has 11.5 percent of original size [2021-12-06 20:14:22,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 133 treesize of output 237 [2021-12-06 20:14:23,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:23,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 79 [2021-12-06 20:14:23,853 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 143 treesize of output 122 [2021-12-06 20:14:24,294 INFO L354 Elim1Store]: treesize reduction 1153, result has 11.9 percent of original size [2021-12-06 20:14:24,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 121 treesize of output 226 [2021-12-06 20:14:24,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:24,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 65 [2021-12-06 20:15:55,511 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 171 treesize of output 148 [2021-12-06 20:15:56,796 INFO L354 Elim1Store]: treesize reduction 1472, result has 18.4 percent of original size [2021-12-06 20:15:56,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 54 case distinctions, treesize of input 147 treesize of output 419 [2021-12-06 20:15:56,966 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:15:58,114 INFO L354 Elim1Store]: treesize reduction 809, result has 7.4 percent of original size [2021-12-06 20:15:58,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 524 treesize of output 475 [2021-12-06 20:16:48,857 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 490 treesize of output 443 [2021-12-06 20:16:55,785 WARN L227 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 513 DAG size of output: 138 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 20:16:55,786 INFO L354 Elim1Store]: treesize reduction 3487, result has 14.9 percent of original size [2021-12-06 20:16:55,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 85 case distinctions, treesize of input 446 treesize of output 920 [2021-12-06 20:17:19,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:17:19,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:17:19,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:19,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:20,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:17:20,026 INFO L244 Elim1Store]: Index analysis took 188 ms [2021-12-06 20:17:20,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 66 disjoint index pairs (out of 105 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 2315 treesize of output 2030 [2021-12-06 20:17:22,133 INFO L354 Elim1Store]: treesize reduction 3878, result has 0.0 percent of original size [2021-12-06 20:17:22,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 1989 treesize of output 1486 [2021-12-06 20:17:22,461 INFO L354 Elim1Store]: treesize reduction 3631, result has 0.3 percent of original size [2021-12-06 20:17:22,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 789 treesize of output 382 [2021-12-06 20:17:22,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:22,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:17:23,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:17:23,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:17:23,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:17:23,149 INFO L244 Elim1Store]: Index analysis took 221 ms [2021-12-06 20:17:23,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 66 disjoint index pairs (out of 105 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 862 treesize of output 418 [2021-12-06 20:19:10,022 INFO L354 Elim1Store]: treesize reduction 4122, result has 0.5 percent of original size [2021-12-06 20:19:10,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 926 treesize of output 231 [2021-12-06 20:19:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 11 proven. 222 refuted. 4 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:19:11,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:20:28,030 WARN L227 SmtUtils]: Spent 12.39s on a formula simplification that was a NOOP. DAG size: 112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 20:20:34,477 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse18 (mod c_~ARR_SIZE~0 4294967296))) (let ((.cse9 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (.cse17 (* .cse18 8)) (.cse4 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 8)) (.cse14 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|)) (.cse15 (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse0 (mod (+ 4294967295 c_~ARR_SIZE~0 (* |c_ULTIMATE.start_main_~index1~0#1| 4294967295)) 4294967296)) (.cse16 (* .cse18 4)) (.cse12 (* |c_ULTIMATE.start_main_~index2~0#1| 4))) (and (or (let ((.cse11 (+ (- 17179869184) .cse16))) (let ((.cse6 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (- 34359738364) .cse17)) (.cse3 (+ .cse16 |c_ULTIMATE.start_main_~#array~0#1.offset| (- 17179869180))) (.cse5 (+ .cse16 |c_ULTIMATE.start_main_~#array~0#1.offset| (- 17179869176))) (.cse2 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse17 (- 34359738368))) (.cse8 (+ (- 34359738360) |c_ULTIMATE.start_main_~#array~0#1.offset| .cse17)) (.cse7 (+ (- 17179869184) .cse16 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (.cse10 (store .cse14 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse12 (* |c_ULTIMATE.start_main_~index1~0#1| .cse11)) .cse15))) (and (or (< 2147483647 .cse0) (= (let ((.cse1 (store .cse10 (+ (* .cse0 .cse11) |c_ULTIMATE.start_main_~#array~0#1.offset| .cse12) |c_ULTIMATE.start_main_~num~0#1|))) (+ (select .cse1 .cse2) (select .cse1 .cse3) (select .cse1 .cse4) (select .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse1 .cse5) (select .cse1 .cse6) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 .cse7) (select .cse1 .cse8) (select .cse1 .cse9))) 0)) (or (<= .cse0 2147483647) (= (let ((.cse13 (store .cse10 (+ (* (+ .cse0 (- 4294967296)) .cse11) |c_ULTIMATE.start_main_~#array~0#1.offset| .cse12) |c_ULTIMATE.start_main_~num~0#1|))) (+ (select .cse13 .cse4) (select .cse13 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse13 .cse6) (select .cse13 .cse3) (select .cse13 .cse5) (select .cse13 .cse9) |c_ULTIMATE.start_main_~sum~0#1| (select .cse13 .cse2) (select .cse13 .cse8) (select .cse13 .cse7))) 0))))) (<= .cse18 2147483647)) (or (= (let ((.cse19 (store (store .cse14 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* |c_ULTIMATE.start_main_~index1~0#1| .cse16) .cse12) .cse15) (+ (* .cse0 .cse16) |c_ULTIMATE.start_main_~#array~0#1.offset| .cse12) |c_ULTIMATE.start_main_~num~0#1|))) (+ (select .cse19 .cse9) (select .cse19 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 8 .cse17)) (select .cse19 (+ .cse16 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (select .cse19 (+ .cse16 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (select .cse19 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse17)) (select .cse19 (+ .cse16 |c_ULTIMATE.start_main_~#array~0#1.offset| 8)) (select .cse19 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse19 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse17 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse19 .cse4))) 0) (< 2147483647 .cse18))))) (and (not (= (+ |c_ULTIMATE.start_main_~index1~0#1| 1) c_~ARR_SIZE~0)) (not (= |c_ULTIMATE.start_main_~index1~0#1| 0)))) is different from true [2021-12-06 20:21:05,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:05,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060974766] [2021-12-06 20:21:05,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:21:05,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874869596] [2021-12-06 20:21:05,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874869596] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:21:05,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:21:05,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2021-12-06 20:21:05,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657479372] [2021-12-06 20:21:05,287 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:21:05,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-12-06 20:21:05,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-12-06 20:21:05,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=7219, Unknown=49, NotChecked=172, Total=7832 [2021-12-06 20:21:05,290 INFO L87 Difference]: Start difference. First operand 198 states and 215 transitions. Second operand has 60 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 58 states have internal predecessors, (86), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5)