./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array20_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_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/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_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array20_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/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_2121cb47-9069-427d-8e16-96687589c51b/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 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:04:54,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:04:54,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:04:54,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:04:54,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:04:54,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:04:54,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:04:54,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:04:54,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:04:54,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:04:54,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:04:54,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:04:54,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:04:54,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:04:54,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:04:54,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:04:54,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:04:54,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:04:54,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:04:54,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:04:54,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:04:54,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:04:54,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:04:54,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:04:54,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:04:54,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:04:54,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:04:54,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:04:54,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:04:54,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:04:54,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:04:54,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:04:54,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:04:54,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:04:54,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:04:54,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:04:54,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:04:54,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:04:54,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:04:54,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:04:54,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:04:54,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:04:54,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:04:54,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:04:54,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:04:54,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:04:54,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:04:54,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:04:54,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:04:54,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:04:54,619 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:04:54,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:04:54,619 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:04:54,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:04:54,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:04:54,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:04:54,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:04:54,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:04:54,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:04:54,620 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:04:54,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:04:54,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:04:54,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:04:54,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:04:54,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:04:54,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:04:54,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:04:54,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:04:54,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:04:54,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:04:54,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:04:54,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:04:54,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:04:54,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:04:54,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:04:54,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:04:54,623 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_2121cb47-9069-427d-8e16-96687589c51b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 [2021-12-06 18:04:54,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:04:54,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:04:54,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:04:54,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:04:54,837 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:04:54,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-patterns/array20_pattern.c [2021-12-06 18:04:54,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/data/2dcc9eab0/ecdf8beceadc4c95be2ec5e836dda65f/FLAGdf9dfb169 [2021-12-06 18:04:55,286 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:04:55,286 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/sv-benchmarks/c/array-patterns/array20_pattern.c [2021-12-06 18:04:55,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/data/2dcc9eab0/ecdf8beceadc4c95be2ec5e836dda65f/FLAGdf9dfb169 [2021-12-06 18:04:55,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/data/2dcc9eab0/ecdf8beceadc4c95be2ec5e836dda65f [2021-12-06 18:04:55,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:04:55,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:04:55,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:04:55,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:04:55,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:04:55,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343a583a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55, skipping insertion in model container [2021-12-06 18:04:55,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:04:55,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:04:55,440 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_2121cb47-9069-427d-8e16-96687589c51b/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2021-12-06 18:04:55,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:04:55,469 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:04:55,478 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_2121cb47-9069-427d-8e16-96687589c51b/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2021-12-06 18:04:55,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:04:55,501 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:04:55,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55 WrapperNode [2021-12-06 18:04:55,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:04:55,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:04:55,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:04:55,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:04:55,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,538 INFO L137 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2021-12-06 18:04:55,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:04:55,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:04:55,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:04:55,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:04:55,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:04:55,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:04:55,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:04:55,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:04:55,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (1/1) ... [2021-12-06 18:04:55,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:04:55,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:04:55,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:04:55,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:04:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:04:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 18:04:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 18:04:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:04:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:04:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:04:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:04:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:04:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:04:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:04:55,692 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:04:55,693 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:04:55,829 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:04:55,834 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:04:55,834 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 18:04:55,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:04:55 BoogieIcfgContainer [2021-12-06 18:04:55,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:04:55,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:04:55,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:04:55,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:04:55,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:04:55" (1/3) ... [2021-12-06 18:04:55,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49de15bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:04:55, skipping insertion in model container [2021-12-06 18:04:55,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:04:55" (2/3) ... [2021-12-06 18:04:55,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49de15bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:04:55, skipping insertion in model container [2021-12-06 18:04:55,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:04:55" (3/3) ... [2021-12-06 18:04:55,842 INFO L111 eAbstractionObserver]: Analyzing ICFG array20_pattern.c [2021-12-06 18:04:55,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:04:55,846 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:04:55,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:04:55,887 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 18:04:55,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:04:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:04:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 18:04:55,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:04:55,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:04:55,907 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:04:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:04:55,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2021-12-06 18:04:55,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:04:55,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417640539] [2021-12-06 18:04:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:04:55,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:04:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:04:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:04:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:04:56,045 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 18:04:56,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:04:56,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417640539] [2021-12-06 18:04:56,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417640539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:04:56,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:04:56,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:04:56,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117893932] [2021-12-06 18:04:56,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:04:56,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:04:56,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:04:56,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:04:56,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:04:56,073 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:04:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:04:56,088 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2021-12-06 18:04:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:04:56,090 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 18:04:56,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:04:56,095 INFO L225 Difference]: With dead ends: 63 [2021-12-06 18:04:56,096 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 18:04:56,098 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 18:04:56,101 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:04:56,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:04:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 18:04:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 18:04:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:04:56,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-12-06 18:04:56,129 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2021-12-06 18:04:56,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:04:56,129 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-12-06 18:04:56,130 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 18:04:56,130 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-12-06 18:04:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 18:04:56,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:04:56,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:04:56,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:04:56,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:04:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:04:56,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2021-12-06 18:04:56,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:04:56,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497007538] [2021-12-06 18:04:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:04:56,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:04:56,147 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:04:56,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351954814] [2021-12-06 18:04:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:04:56,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:04:56,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:04:56,149 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:04:56,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:04:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:04:56,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:04:56,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:04:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:04:56,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:04:56,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:04:56,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497007538] [2021-12-06 18:04:56,327 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:04:56,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351954814] [2021-12-06 18:04:56,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351954814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:04:56,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:04:56,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:04:56,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838026249] [2021-12-06 18:04:56,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:04:56,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:04:56,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:04:56,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:04:56,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:04:56,331 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:04:56,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:04:56,354 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-12-06 18:04:56,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:04:56,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-12-06 18:04:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:04:56,356 INFO L225 Difference]: With dead ends: 36 [2021-12-06 18:04:56,356 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 18:04:56,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:04:56,358 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:04:56,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:04:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 18:04:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-06 18:04:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:04:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 18:04:56,364 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2021-12-06 18:04:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:04:56,365 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 18:04:56,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:04:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 18:04:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 18:04:56,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:04:56,366 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:04:56,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:04:56,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:04:56,569 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:04:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:04:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2021-12-06 18:04:56,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:04:56,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632584936] [2021-12-06 18:04:56,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:04:56,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:04:56,615 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:04:56,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247518009] [2021-12-06 18:04:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:04:56,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:04:56,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:04:56,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:04:56,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:04:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:04:56,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:04:56,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:04:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:04:56,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:04:56,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:04:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632584936] [2021-12-06 18:04:56,875 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:04:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247518009] [2021-12-06 18:04:56,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247518009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:04:56,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:04:56,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:04:56,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947833071] [2021-12-06 18:04:56,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:04:56,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:04:56,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:04:56,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:04:56,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:04:56,878 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:04:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:04:56,960 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2021-12-06 18:04:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:04:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-06 18:04:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:04:56,961 INFO L225 Difference]: With dead ends: 67 [2021-12-06 18:04:56,962 INFO L226 Difference]: Without dead ends: 42 [2021-12-06 18:04:56,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:04:56,963 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:04:56,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 80 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:04:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-06 18:04:56,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-12-06 18:04:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:04:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-12-06 18:04:56,971 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2021-12-06 18:04:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:04:56,971 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-12-06 18:04:56,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:04:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-12-06 18:04:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 18:04:56,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:04:56,973 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:04:57,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:04:57,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:04:57,176 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:04:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:04:57,178 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2021-12-06 18:04:57,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:04:57,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718063929] [2021-12-06 18:04:57,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:04:57,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:04:57,222 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:04:57,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887551712] [2021-12-06 18:04:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:04:57,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:04:57,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:04:57,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:04:57,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:04:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:04:57,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:04:57,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:04:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:04:57,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:04:57,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:04:57,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718063929] [2021-12-06 18:04:57,319 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:04:57,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887551712] [2021-12-06 18:04:57,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887551712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:04:57,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:04:57,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:04:57,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840551053] [2021-12-06 18:04:57,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:04:57,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:04:57,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:04:57,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:04:57,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:04:57,321 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:04:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:04:57,371 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-12-06 18:04:57,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:04:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-06 18:04:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:04:57,373 INFO L225 Difference]: With dead ends: 64 [2021-12-06 18:04:57,373 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 18:04:57,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:04:57,374 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 51 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 18:04:57,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 51 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:04:57,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 18:04:57,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-12-06 18:04:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:04:57,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-12-06 18:04:57,381 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 38 [2021-12-06 18:04:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:04:57,382 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-12-06 18:04:57,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:04:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-12-06 18:04:57,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 18:04:57,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:04:57,383 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:04:57,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:04:57,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:04:57,585 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:04:57,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:04:57,587 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2021-12-06 18:04:57,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:04:57,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168203072] [2021-12-06 18:04:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:04:57,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:04:57,623 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:04:57,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384826235] [2021-12-06 18:04:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:04:57,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:04:57,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:04:57,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:04:57,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:04:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:04:57,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 18:04:57,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:04:58,273 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 148 treesize of output 139 [2021-12-06 18:04:58,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:04:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:04:58,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:04:58,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:04:58,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:04:58,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:04:58,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 148 [2021-12-06 18:04:58,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 3 [2021-12-06 18:04:58,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2021-12-06 18:04:58,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 3 [2021-12-06 18:04:58,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:04:58,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:04:58,550 INFO L354 Elim1Store]: treesize reduction 3, result has 70.0 percent of original size [2021-12-06 18:04:58,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 29 [2021-12-06 18:04:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:04:58,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:04:58,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 353 treesize of output 337 [2021-12-06 18:04:58,976 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:04:58,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 8 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 337 treesize of output 362 [2021-12-06 18:04:59,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 4 [2021-12-06 18:04:59,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 4 [2021-12-06 18:04:59,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 4 [2021-12-06 18:04:59,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-12-06 18:04:59,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-12-06 18:04:59,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-12-06 18:04:59,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-12-06 18:04:59,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-12-06 18:04:59,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-12-06 18:04:59,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-12-06 18:04:59,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-12-06 18:04:59,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-12-06 18:05:00,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-12-06 18:05:00,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-12-06 18:05:00,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-12-06 18:05:00,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 4 [2021-12-06 18:05:00,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 4 [2021-12-06 18:05:00,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 4 [2021-12-06 18:05:00,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-12-06 18:05:00,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-12-06 18:05:01,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-12-06 18:05:01,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-12-06 18:05:01,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-12-06 18:05:01,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-12-06 18:05:14,221 WARN L227 SmtUtils]: Spent 12.90s on a formula simplification. DAG size of input: 184 DAG size of output: 120 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 18:05:14,226 INFO L354 Elim1Store]: treesize reduction 1295, result has 25.1 percent of original size [2021-12-06 18:05:14,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 344 treesize of output 577 [2021-12-06 18:09:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:09:44,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:09:44,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168203072] [2021-12-06 18:09:44,462 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:09:44,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384826235] [2021-12-06 18:09:44,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384826235] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:09:44,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:09:44,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 37 [2021-12-06 18:09:44,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955696920] [2021-12-06 18:09:44,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:09:44,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 18:09:44,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:09:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 18:09:44,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 18:09:44,464 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 37 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 18:09:58,093 WARN L227 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 63 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:10:00,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 18:10:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:10:17,967 INFO L93 Difference]: Finished difference Result 148 states and 191 transitions. [2021-12-06 18:10:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-06 18:10:17,968 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2021-12-06 18:10:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:10:17,971 INFO L225 Difference]: With dead ends: 148 [2021-12-06 18:10:17,971 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 18:10:17,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=1225, Invalid=5581, Unknown=0, NotChecked=0, Total=6806 [2021-12-06 18:10:17,974 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 337 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 143 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:10:17,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 234 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 815 Invalid, 1 Unknown, 64 Unchecked, 6.2s Time] [2021-12-06 18:10:17,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 18:10:17,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 65. [2021-12-06 18:10:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.280701754385965) internal successors, (73), 57 states have internal predecessors, (73), 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 18:10:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2021-12-06 18:10:17,986 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 40 [2021-12-06 18:10:17,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:17,986 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2021-12-06 18:10:17,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 18:10:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2021-12-06 18:10:17,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 18:10:17,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:17,988 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:10:17,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:10:18,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:18,189 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:18,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1287607751, now seen corresponding path program 1 times [2021-12-06 18:10:18,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:18,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245786548] [2021-12-06 18:10:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:18,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:18,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:10:18,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373239723] [2021-12-06 18:10:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:18,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:18,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:18,204 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:18,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:10:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:10:18,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 18:10:18,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:10:18,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:10:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:10:18,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:10:18,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245786548] [2021-12-06 18:10:18,529 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:10:18,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373239723] [2021-12-06 18:10:18,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373239723] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:10:18,529 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:10:18,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2021-12-06 18:10:18,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870251105] [2021-12-06 18:10:18,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:10:18,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 18:10:18,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:10:18,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 18:10:18,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:10:18,531 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 18:10:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:10:18,897 INFO L93 Difference]: Finished difference Result 195 states and 238 transitions. [2021-12-06 18:10:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 18:10:18,898 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2021-12-06 18:10:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:10:18,899 INFO L225 Difference]: With dead ends: 195 [2021-12-06 18:10:18,899 INFO L226 Difference]: Without dead ends: 148 [2021-12-06 18:10:18,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2021-12-06 18:10:18,901 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 124 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:10:18,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 186 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:10:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-06 18:10:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 68. [2021-12-06 18:10:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 59 states have internal predecessors, (71), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 18:10:18,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2021-12-06 18:10:18,915 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 40 [2021-12-06 18:10:18,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:18,916 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2021-12-06 18:10:18,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 18:10:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2021-12-06 18:10:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 18:10:18,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:18,917 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:10:18,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:10:19,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 18:10:19,118 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:19,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2021-12-06 18:10:19,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:19,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19897419] [2021-12-06 18:10:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:19,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:19,126 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:10:19,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436075617] [2021-12-06 18:10:19,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:10:19,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:19,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:19,128 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:19,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:10:19,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:10:19,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:10:19,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:10:19,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:10:19,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:10:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:10:19,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:10:19,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19897419] [2021-12-06 18:10:19,284 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:10:19,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436075617] [2021-12-06 18:10:19,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436075617] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:10:19,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:10:19,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 18:10:19,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625862535] [2021-12-06 18:10:19,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:10:19,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:10:19,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:10:19,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:10:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:10:19,286 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:10:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:10:19,406 INFO L93 Difference]: Finished difference Result 148 states and 177 transitions. [2021-12-06 18:10:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:10:19,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-06 18:10:19,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:10:19,407 INFO L225 Difference]: With dead ends: 148 [2021-12-06 18:10:19,408 INFO L226 Difference]: Without dead ends: 109 [2021-12-06 18:10:19,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:10:19,409 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 92 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:10:19,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 129 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:10:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-06 18:10:19,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 81. [2021-12-06 18:10:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 72 states have internal predecessors, (85), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 18:10:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2021-12-06 18:10:19,420 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 42 [2021-12-06 18:10:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:19,421 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2021-12-06 18:10:19,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:10:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2021-12-06 18:10:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 18:10:19,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:19,422 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:10:19,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:10:19,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:19,623 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1406472713, now seen corresponding path program 2 times [2021-12-06 18:10:19,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:19,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454544818] [2021-12-06 18:10:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:19,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:19,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:10:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832889519] [2021-12-06 18:10:19,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:10:19,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:19,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:19,637 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:19,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:10:19,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:10:19,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:10:19,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:10:19,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:10:19,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:10:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 18:10:19,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:10:19,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454544818] [2021-12-06 18:10:19,799 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:10:19,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832889519] [2021-12-06 18:10:19,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832889519] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:10:19,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:10:19,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-06 18:10:19,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632396034] [2021-12-06 18:10:19,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:10:19,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:10:19,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:10:19,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:10:19,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:10:19,800 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:10:19,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:10:19,933 INFO L93 Difference]: Finished difference Result 152 states and 187 transitions. [2021-12-06 18:10:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:10:19,933 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-06 18:10:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:10:19,934 INFO L225 Difference]: With dead ends: 152 [2021-12-06 18:10:19,934 INFO L226 Difference]: Without dead ends: 111 [2021-12-06 18:10:19,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:10:19,935 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 50 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:10:19,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 110 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:10:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-06 18:10:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2021-12-06 18:10:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 86 states have internal predecessors, (103), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 18:10:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2021-12-06 18:10:19,948 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 42 [2021-12-06 18:10:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:19,948 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2021-12-06 18:10:19,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:10:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2021-12-06 18:10:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:10:19,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:19,949 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:10:19,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:10:20,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:20,150 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:20,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 3 times [2021-12-06 18:10:20,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:20,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494145498] [2021-12-06 18:10:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:20,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:20,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:10:20,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435282252] [2021-12-06 18:10:20,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:10:20,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:20,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:20,182 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:20,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:10:20,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 18:10:20,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:10:20,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:10:20,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 18:10:20,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:10:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 18:10:20,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:10:20,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494145498] [2021-12-06 18:10:20,423 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:10:20,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435282252] [2021-12-06 18:10:20,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435282252] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:10:20,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:10:20,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 18:10:20,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072169990] [2021-12-06 18:10:20,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:10:20,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:10:20,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:10:20,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:10:20,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:10:20,425 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:10:20,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:10:20,516 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2021-12-06 18:10:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:10:20,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2021-12-06 18:10:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:10:20,518 INFO L225 Difference]: With dead ends: 157 [2021-12-06 18:10:20,518 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 18:10:20,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:10:20,519 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 87 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:10:20,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 94 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:10:20,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 18:10:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 97. [2021-12-06 18:10:20,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 87 states have (on average 1.206896551724138) internal successors, (105), 88 states have internal predecessors, (105), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 18:10:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2021-12-06 18:10:20,531 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 45 [2021-12-06 18:10:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:20,531 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2021-12-06 18:10:20,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:10:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2021-12-06 18:10:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 18:10:20,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:20,532 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:10:20,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 18:10:20,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 18:10:20,734 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:20,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1727010197, now seen corresponding path program 3 times [2021-12-06 18:10:20,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:20,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231613945] [2021-12-06 18:10:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:20,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:20,763 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:10:20,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371040656] [2021-12-06 18:10:20,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:10:20,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:20,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:20,766 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:20,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:10:20,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 18:10:20,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:10:20,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 18:10:20,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 18:10:20,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:10:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 18:10:21,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:10:21,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231613945] [2021-12-06 18:10:21,132 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:10:21,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371040656] [2021-12-06 18:10:21,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371040656] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:10:21,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:10:21,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2021-12-06 18:10:21,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674338892] [2021-12-06 18:10:21,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:10:21,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 18:10:21,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:10:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 18:10:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:10:21,133 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 18:10:21,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:10:21,377 INFO L93 Difference]: Finished difference Result 157 states and 186 transitions. [2021-12-06 18:10:21,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:10:21,378 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2021-12-06 18:10:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:10:21,379 INFO L225 Difference]: With dead ends: 157 [2021-12-06 18:10:21,379 INFO L226 Difference]: Without dead ends: 153 [2021-12-06 18:10:21,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2021-12-06 18:10:21,380 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 141 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:10:21,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 157 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:10:21,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-06 18:10:21,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 94. [2021-12-06 18:10:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 84 states have internal predecessors, (99), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 18:10:21,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2021-12-06 18:10:21,391 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 49 [2021-12-06 18:10:21,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:21,392 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2021-12-06 18:10:21,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 18:10:21,392 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2021-12-06 18:10:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 18:10:21,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:21,392 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2021-12-06 18:10:21,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 18:10:21,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:21,594 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:21,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:21,595 INFO L85 PathProgramCache]: Analyzing trace with hash 595301749, now seen corresponding path program 4 times [2021-12-06 18:10:21,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:21,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446728867] [2021-12-06 18:10:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:21,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:21,619 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:10:21,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253112689] [2021-12-06 18:10:21,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:10:21,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:21,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:21,623 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:21,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 18:10:21,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:10:21,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:10:21,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:10:21,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 18:10:21,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:10:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 18:10:21,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:10:21,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446728867] [2021-12-06 18:10:21,782 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:10:21,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253112689] [2021-12-06 18:10:21,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253112689] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:10:21,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:10:21,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 18:10:21,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138758980] [2021-12-06 18:10:21,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:10:21,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:10:21,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:10:21,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:10:21,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:10:21,784 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 18:10:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:10:21,887 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2021-12-06 18:10:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:10:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 18:10:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:10:21,888 INFO L225 Difference]: With dead ends: 113 [2021-12-06 18:10:21,888 INFO L226 Difference]: Without dead ends: 72 [2021-12-06 18:10:21,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:10:21,889 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 79 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:10:21,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 84 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:10:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-06 18:10:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2021-12-06 18:10:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.206896551724138) internal successors, (70), 58 states have internal predecessors, (70), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:10:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-12-06 18:10:21,896 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 50 [2021-12-06 18:10:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:21,896 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-12-06 18:10:21,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 18:10:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-12-06 18:10:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 18:10:21,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:21,897 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:10:21,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 18:10:22,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 18:10:22,099 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:22,100 INFO L85 PathProgramCache]: Analyzing trace with hash 538416053, now seen corresponding path program 5 times [2021-12-06 18:10:22,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:22,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31989970] [2021-12-06 18:10:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:22,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:22,128 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:10:22,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636075754] [2021-12-06 18:10:22,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:10:22,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:22,132 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:22,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 18:10:25,635 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-06 18:10:25,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:10:25,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:10:25,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 18:10:25,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:10:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 18:10:25,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:10:25,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31989970] [2021-12-06 18:10:25,757 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:10:25,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636075754] [2021-12-06 18:10:25,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636075754] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:10:25,757 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:10:25,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 18:10:25,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029311400] [2021-12-06 18:10:25,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:10:25,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:10:25,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:10:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:10:25,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:10:25,758 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:10:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:10:25,850 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2021-12-06 18:10:25,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:10:25,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2021-12-06 18:10:25,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:10:25,851 INFO L225 Difference]: With dead ends: 71 [2021-12-06 18:10:25,851 INFO L226 Difference]: Without dead ends: 60 [2021-12-06 18:10:25,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:10:25,852 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:10:25,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 96 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:10:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-06 18:10:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-12-06 18:10:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:10:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2021-12-06 18:10:25,858 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 54 [2021-12-06 18:10:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:25,858 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2021-12-06 18:10:25,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:10:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2021-12-06 18:10:25,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 18:10:25,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:25,858 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:10:25,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 18:10:26,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 18:10:26,060 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:26,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 6 times [2021-12-06 18:10:26,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:26,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647849312] [2021-12-06 18:10:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:26,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:26,075 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:10:26,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191014478] [2021-12-06 18:10:26,075 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:10:26,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:26,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:26,076 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:26,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2121cb47-9069-427d-8e16-96687589c51b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 18:10:26,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-12-06 18:10:26,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:10:26,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-06 18:10:26,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:26,462 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 54 treesize of output 49 [2021-12-06 18:10:26,465 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 16 treesize of output 15 [2021-12-06 18:10:26,470 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 18 treesize of output 17 [2021-12-06 18:10:26,515 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 18:10:26,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:10:26,535 INFO L354 Elim1Store]: treesize reduction 132, result has 19.0 percent of original size [2021-12-06 18:10:26,536 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 89 [2021-12-06 18:10:26,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,546 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 44 treesize of output 19 [2021-12-06 18:10:26,578 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-12-06 18:10:26,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 24 [2021-12-06 18:10:26,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 90 [2021-12-06 18:10:26,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 134 [2021-12-06 18:10:26,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,829 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 101 treesize of output 42 [2021-12-06 18:10:26,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 70 [2021-12-06 18:10:26,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:26,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 107 [2021-12-06 18:10:27,002 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 18:10:27,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,022 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 76 treesize of output 37 [2021-12-06 18:10:27,885 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 347 treesize of output 322 [2021-12-06 18:10:27,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:27,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,042 INFO L244 Elim1Store]: Index analysis took 150 ms [2021-12-06 18:10:28,362 INFO L354 Elim1Store]: treesize reduction 151, result has 47.0 percent of original size [2021-12-06 18:10:28,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 8 stores, 4 select indices, 4 select index equivalence classes, 58 disjoint index pairs (out of 6 index pairs), introduced 12 new quantified variables, introduced 4 case distinctions, treesize of input 333 treesize of output 712 [2021-12-06 18:10:28,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,544 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 76 treesize of output 33 [2021-12-06 18:10:28,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,743 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 77 treesize of output 33 [2021-12-06 18:10:28,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,797 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 198 treesize of output 108 [2021-12-06 18:10:28,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:28,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,011 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 79 treesize of output 33 [2021-12-06 18:10:29,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,207 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:10:29,207 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 103 treesize of output 88 [2021-12-06 18:10:29,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,274 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 153 treesize of output 84 [2021-12-06 18:10:29,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:29,465 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 98 treesize of output 47 [2021-12-06 18:10:32,034 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 303 treesize of output 284 [2021-12-06 18:10:32,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:32,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:33,609 INFO L354 Elim1Store]: treesize reduction 543, result has 24.3 percent of original size [2021-12-06 18:10:33,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 23 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 287 treesize of output 579 [2021-12-06 18:10:34,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,183 INFO L244 Elim1Store]: Index analysis took 178 ms [2021-12-06 18:10:34,219 INFO L354 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2021-12-06 18:10:34,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 66 [2021-12-06 18:10:34,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:34,898 INFO L244 Elim1Store]: Index analysis took 368 ms [2021-12-06 18:10:34,919 INFO L354 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2021-12-06 18:10:34,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 181 treesize of output 110 [2021-12-06 18:10:35,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:35,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:35,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:35,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:35,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:35,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:35,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:10:35,452 INFO L354 Elim1Store]: treesize reduction 164, result has 32.0 percent of original size [2021-12-06 18:10:35,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 343 treesize of output 308