./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn2.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_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/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_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/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_d665115c-115c-443b-8e93-5bc368fc62e1/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 6c5e7a5b5183897e81f3d009c328161669eb0a8a3042b507053cc41bb75da51c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:26:05,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:26:05,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:26:05,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:26:05,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:26:05,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:26:05,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:26:05,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:26:05,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:26:05,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:26:05,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:26:05,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:26:05,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:26:05,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:26:05,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:26:05,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:26:05,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:26:05,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:26:05,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:26:05,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:26:05,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:26:05,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:26:05,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:26:05,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:26:05,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:26:05,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:26:05,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:26:05,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:26:05,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:26:05,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:26:05,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:26:05,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:26:05,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:26:05,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:26:05,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:26:05,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:26:05,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:26:05,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:26:05,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:26:05,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:26:05,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:26:05,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:26:05,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:26:05,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:26:05,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:26:05,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:26:05,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:26:05,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:26:05,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:26:05,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:26:05,788 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:26:05,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:26:05,788 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:26:05,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:26:05,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:26:05,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:26:05,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:26:05,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:26:05,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:26:05,789 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:26:05,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:26:05,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:26:05,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:26:05,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:26:05,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:26:05,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:26:05,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:26:05,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:26:05,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:26:05,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:26:05,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:26:05,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:26:05,790 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:26:05,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:26:05,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:26:05,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:26:05,790 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_d665115c-115c-443b-8e93-5bc368fc62e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c5e7a5b5183897e81f3d009c328161669eb0a8a3042b507053cc41bb75da51c [2021-12-06 22:26:05,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:26:05,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:26:05,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:26:05,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:26:05,982 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:26:05,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-fpi/eqn2.c [2021-12-06 22:26:06,033 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/data/9a5326bb4/2848d7dd433c4114969731f7c7262de0/FLAGc68d2da4d [2021-12-06 22:26:06,428 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:26:06,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/sv-benchmarks/c/array-fpi/eqn2.c [2021-12-06 22:26:06,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/data/9a5326bb4/2848d7dd433c4114969731f7c7262de0/FLAGc68d2da4d [2021-12-06 22:26:06,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/data/9a5326bb4/2848d7dd433c4114969731f7c7262de0 [2021-12-06 22:26:06,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:26:06,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:26:06,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:26:06,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:26:06,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:26:06,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e54b97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06, skipping insertion in model container [2021-12-06 22:26:06,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:26:06,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:26:06,577 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_d665115c-115c-443b-8e93-5bc368fc62e1/sv-benchmarks/c/array-fpi/eqn2.c[587,600] [2021-12-06 22:26:06,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:26:06,598 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:26:06,608 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_d665115c-115c-443b-8e93-5bc368fc62e1/sv-benchmarks/c/array-fpi/eqn2.c[587,600] [2021-12-06 22:26:06,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:26:06,625 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:26:06,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06 WrapperNode [2021-12-06 22:26:06,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:26:06,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:26:06,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:26:06,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:26:06,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,654 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2021-12-06 22:26:06,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:26:06,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:26:06,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:26:06,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:26:06,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:26:06,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:26:06,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:26:06,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:26:06,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (1/1) ... [2021-12-06 22:26:06,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:26:06,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:06,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:26:06,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:26:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:26:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:26:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:26:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:26:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:26:06,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:26:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:26:06,807 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:26:06,808 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:26:06,920 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:26:06,925 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:26:06,925 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 22:26:06,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:26:06 BoogieIcfgContainer [2021-12-06 22:26:06,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:26:06,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:26:06,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:26:06,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:26:06,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:26:06" (1/3) ... [2021-12-06 22:26:06,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db7af09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:26:06, skipping insertion in model container [2021-12-06 22:26:06,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:06" (2/3) ... [2021-12-06 22:26:06,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db7af09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:26:06, skipping insertion in model container [2021-12-06 22:26:06,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:26:06" (3/3) ... [2021-12-06 22:26:06,933 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2.c [2021-12-06 22:26:06,944 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:26:06,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:26:06,984 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:26:06,991 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:26:06,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:26:07,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:07,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:26:07,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:07,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:07,010 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:07,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2021-12-06 22:26:07,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:07,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44823753] [2021-12-06 22:26:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:07,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:07,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:07,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44823753] [2021-12-06 22:26:07,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44823753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:07,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:07,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:26:07,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327316297] [2021-12-06 22:26:07,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:07,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:26:07,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:26:07,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:26:07,203 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:07,221 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-12-06 22:26:07,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:26:07,223 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 22:26:07,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:07,231 INFO L225 Difference]: With dead ends: 38 [2021-12-06 22:26:07,231 INFO L226 Difference]: Without dead ends: 17 [2021-12-06 22:26:07,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:26:07,238 INFO L933 BasicCegarLoop]: 24 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, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:07,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-06 22:26:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-06 22:26:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-12-06 22:26:07,265 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-12-06 22:26:07,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:07,265 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-06 22:26:07,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:07,266 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-12-06 22:26:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:26:07,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:07,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:07,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:26:07,267 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2021-12-06 22:26:07,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:07,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846713530] [2021-12-06 22:26:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:07,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:07,300 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:07,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535966246] [2021-12-06 22:26:07,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:07,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:07,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:07,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:07,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:26:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:07,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 22:26:07,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:07,450 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-06 22:26:07,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 51 [2021-12-06 22:26:07,461 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 8 treesize of output 7 [2021-12-06 22:26:07,471 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 8 treesize of output 7 [2021-12-06 22:26:07,602 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 15 treesize of output 11 [2021-12-06 22:26:07,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2021-12-06 22:26:07,644 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 5 treesize of output 3 [2021-12-06 22:26:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:07,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:26:07,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:07,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846713530] [2021-12-06 22:26:07,699 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:07,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535966246] [2021-12-06 22:26:07,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535966246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:07,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:07,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:26:07,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751306778] [2021-12-06 22:26:07,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:07,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:26:07,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:07,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:26:07,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:26:07,701 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:07,760 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-12-06 22:26:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:26:07,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 22:26:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:07,761 INFO L225 Difference]: With dead ends: 34 [2021-12-06 22:26:07,761 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 22:26:07,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:26:07,763 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:07,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 56 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 22:26:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2021-12-06 22:26:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-12-06 22:26:07,767 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-12-06 22:26:07,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:07,768 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-12-06 22:26:07,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-12-06 22:26:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 22:26:07,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:07,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:07,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:26:07,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:07,971 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2021-12-06 22:26:07,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:07,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688381150] [2021-12-06 22:26:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:07,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:08,061 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:08,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713204810] [2021-12-06 22:26:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:08,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:08,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:08,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:08,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:26:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:08,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:26:08,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:08,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:26:08,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:08,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688381150] [2021-12-06 22:26:08,212 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:08,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713204810] [2021-12-06 22:26:08,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713204810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:08,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:08,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:26:08,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370403640] [2021-12-06 22:26:08,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:08,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:26:08,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:08,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:26:08,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:26:08,213 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:08,257 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2021-12-06 22:26:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:26:08,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 22:26:08,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:08,258 INFO L225 Difference]: With dead ends: 49 [2021-12-06 22:26:08,258 INFO L226 Difference]: Without dead ends: 40 [2021-12-06 22:26:08,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:26:08,259 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:08,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:08,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-06 22:26:08,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2021-12-06 22:26:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-12-06 22:26:08,263 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2021-12-06 22:26:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:08,264 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-12-06 22:26:08,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-12-06 22:26:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 22:26:08,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:08,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:08,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:26:08,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:08,466 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2021-12-06 22:26:08,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:08,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362031277] [2021-12-06 22:26:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:08,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:08,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:08,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766563551] [2021-12-06 22:26:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:08,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:08,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:08,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:26:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:08,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:26:08,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:08,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:08,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:08,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362031277] [2021-12-06 22:26:08,770 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:08,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766563551] [2021-12-06 22:26:08,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766563551] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:08,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:26:08,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-12-06 22:26:08,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202628003] [2021-12-06 22:26:08,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:08,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:26:08,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:26:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:26:08,772 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:08,854 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-12-06 22:26:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:26:08,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 22:26:08,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:08,855 INFO L225 Difference]: With dead ends: 44 [2021-12-06 22:26:08,855 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 22:26:08,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:26:08,856 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:08,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 46 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:26:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 22:26:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2021-12-06 22:26:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-12-06 22:26:08,860 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2021-12-06 22:26:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:08,861 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-06 22:26:08,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-12-06 22:26:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 22:26:08,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:08,861 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:08,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:26:09,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:09,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:09,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:09,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2021-12-06 22:26:09,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:09,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820034594] [2021-12-06 22:26:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:09,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:09,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:09,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666515681] [2021-12-06 22:26:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:09,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:09,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:09,113 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:09,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:26:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:09,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:26:09,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:09,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:26:09,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:09,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820034594] [2021-12-06 22:26:09,189 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:09,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666515681] [2021-12-06 22:26:09,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666515681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:09,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:09,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:26:09,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015865081] [2021-12-06 22:26:09,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:09,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:26:09,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:26:09,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:26:09,191 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:09,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:09,242 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-12-06 22:26:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:26:09,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 22:26:09,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:09,243 INFO L225 Difference]: With dead ends: 41 [2021-12-06 22:26:09,243 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 22:26:09,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:26:09,245 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:09,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 32 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:09,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 22:26:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-12-06 22:26:09,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-06 22:26:09,248 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2021-12-06 22:26:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:09,248 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-06 22:26:09,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:09,248 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-06 22:26:09,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 22:26:09,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:09,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:09,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:26:09,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:09,451 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:09,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:09,452 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2021-12-06 22:26:09,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:09,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051256516] [2021-12-06 22:26:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:09,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:09,528 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:09,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145603947] [2021-12-06 22:26:09,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:09,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:09,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:09,532 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:09,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:26:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:09,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 22:26:09,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:09,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:26:09,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:09,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-06 22:26:09,675 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 8 treesize of output 7 [2021-12-06 22:26:09,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:26:09,717 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 22:26:09,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:26:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:09,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:09,918 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_147 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_147) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2021-12-06 22:26:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-06 22:26:09,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:09,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051256516] [2021-12-06 22:26:09,934 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:09,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145603947] [2021-12-06 22:26:09,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145603947] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:09,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:26:09,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-12-06 22:26:09,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244694210] [2021-12-06 22:26:09,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:09,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:26:09,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:09,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:26:09,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=52, Unknown=1, NotChecked=14, Total=90 [2021-12-06 22:26:09,935 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:10,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:10,023 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-12-06 22:26:10,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:26:10,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 22:26:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:10,024 INFO L225 Difference]: With dead ends: 35 [2021-12-06 22:26:10,024 INFO L226 Difference]: Without dead ends: 33 [2021-12-06 22:26:10,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=110, Unknown=1, NotChecked=22, Total=182 [2021-12-06 22:26:10,025 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:10,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 65 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2021-12-06 22:26:10,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-06 22:26:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2021-12-06 22:26:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-12-06 22:26:10,030 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2021-12-06 22:26:10,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:10,030 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-06 22:26:10,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-12-06 22:26:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 22:26:10,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:10,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:10,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 22:26:10,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 22:26:10,232 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:10,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1267903976, now seen corresponding path program 2 times [2021-12-06 22:26:10,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:10,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125675718] [2021-12-06 22:26:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:10,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:10,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:10,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770149258] [2021-12-06 22:26:10,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:26:10,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:10,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:10,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:10,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:26:10,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:26:10,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:26:10,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:26:10,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:10,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:10,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:10,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125675718] [2021-12-06 22:26:10,374 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:10,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770149258] [2021-12-06 22:26:10,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770149258] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:10,375 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:26:10,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 22:26:10,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690140421] [2021-12-06 22:26:10,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:10,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:26:10,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:26:10,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:26:10,376 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:10,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:10,484 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-12-06 22:26:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:26:10,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-06 22:26:10,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:10,486 INFO L225 Difference]: With dead ends: 60 [2021-12-06 22:26:10,486 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 22:26:10,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:26:10,487 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:10,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 37 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:26:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 22:26:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2021-12-06 22:26:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-12-06 22:26:10,494 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2021-12-06 22:26:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:10,494 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-12-06 22:26:10,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-12-06 22:26:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 22:26:10,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:10,495 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:10,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:26:10,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:10,696 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:10,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2021-12-06 22:26:10,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:10,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518251666] [2021-12-06 22:26:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:10,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:10,715 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:10,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521372227] [2021-12-06 22:26:10,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:10,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:10,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:10,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:10,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:26:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:10,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 22:26:10,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:10,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:26:10,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:10,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-12-06 22:26:10,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-12-06 22:26:10,818 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 8 treesize of output 7 [2021-12-06 22:26:10,820 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 8 treesize of output 7 [2021-12-06 22:26:10,849 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 22:26:10,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-12-06 22:26:10,895 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-12-06 22:26:10,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2021-12-06 22:26:11,079 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-06 22:26:11,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 28 [2021-12-06 22:26:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:11,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:11,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:11,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518251666] [2021-12-06 22:26:11,555 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:11,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521372227] [2021-12-06 22:26:11,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521372227] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:11,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:26:11,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-12-06 22:26:11,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088204833] [2021-12-06 22:26:11,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:11,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:26:11,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:26:11,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:26:11,557 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:11,657 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-12-06 22:26:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:26:11,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 22:26:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:11,658 INFO L225 Difference]: With dead ends: 39 [2021-12-06 22:26:11,658 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 22:26:11,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:26:11,659 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:11,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2021-12-06 22:26:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 22:26:11,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-12-06 22:26:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-12-06 22:26:11,663 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 20 [2021-12-06 22:26:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:11,663 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-12-06 22:26:11,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-12-06 22:26:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 22:26:11,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:11,664 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:11,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:26:11,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:11,865 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:11,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:11,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 3 times [2021-12-06 22:26:11,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:11,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107245801] [2021-12-06 22:26:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:11,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:11,924 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:11,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368233560] [2021-12-06 22:26:11,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:26:11,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:11,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:11,928 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:11,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:26:12,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 22:26:12,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:26:12,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 22:26:12,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:12,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:26:12,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:12,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-06 22:26:12,176 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 8 treesize of output 7 [2021-12-06 22:26:12,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:26:12,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:26:12,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-12-06 22:26:12,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:12,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:12,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:12,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-06 22:26:12,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:12,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2021-12-06 22:26:12,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-12-06 22:26:12,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:12,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:12,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:12,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-06 22:26:12,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:12,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2021-12-06 22:26:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:12,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:12,709 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_270 (Array Int Int)) (v_ArrVal_273 Int) (v_ArrVal_272 Int)) (= (select (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_270) |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8) v_ArrVal_272) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_273) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (<= 2 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2021-12-06 22:26:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 22:26:12,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:12,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107245801] [2021-12-06 22:26:12,723 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:12,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368233560] [2021-12-06 22:26:12,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368233560] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:12,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:26:12,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 21 [2021-12-06 22:26:12,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65426088] [2021-12-06 22:26:12,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:12,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 22:26:12,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 22:26:12,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=270, Unknown=1, NotChecked=36, Total=420 [2021-12-06 22:26:12,725 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:12,983 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-12-06 22:26:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:26:12,983 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 22:26:12,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:12,984 INFO L225 Difference]: With dead ends: 71 [2021-12-06 22:26:12,984 INFO L226 Difference]: Without dead ends: 69 [2021-12-06 22:26:12,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=523, Unknown=1, NotChecked=50, Total=756 [2021-12-06 22:26:12,985 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:12,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 92 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 164 Invalid, 0 Unknown, 108 Unchecked, 0.1s Time] [2021-12-06 22:26:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-06 22:26:12,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 45. [2021-12-06 22:26:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:12,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2021-12-06 22:26:12,990 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 20 [2021-12-06 22:26:12,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:12,990 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2021-12-06 22:26:12,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2021-12-06 22:26:12,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 22:26:12,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:12,991 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:13,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:26:13,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 22:26:13,193 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash 986773582, now seen corresponding path program 2 times [2021-12-06 22:26:13,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:13,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153622904] [2021-12-06 22:26:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:13,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:13,239 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:13,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282081726] [2021-12-06 22:26:13,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:26:13,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:13,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:13,240 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:13,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:26:13,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:26:13,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:26:13,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:26:13,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:26:13,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:26:13,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:13,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153622904] [2021-12-06 22:26:13,348 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:13,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282081726] [2021-12-06 22:26:13,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282081726] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:13,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:26:13,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 22:26:13,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39695306] [2021-12-06 22:26:13,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:13,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:26:13,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:26:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:26:13,349 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:13,447 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2021-12-06 22:26:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:26:13,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 22:26:13,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:13,448 INFO L225 Difference]: With dead ends: 77 [2021-12-06 22:26:13,448 INFO L226 Difference]: Without dead ends: 68 [2021-12-06 22:26:13,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:26:13,448 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 48 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:13,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 55 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:26:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-06 22:26:13,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2021-12-06 22:26:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-12-06 22:26:13,453 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 22 [2021-12-06 22:26:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:13,454 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-12-06 22:26:13,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:13,454 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-12-06 22:26:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 22:26:13,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:13,454 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:13,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:26:13,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:13,656 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:13,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1598333292, now seen corresponding path program 4 times [2021-12-06 22:26:13,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:13,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786694828] [2021-12-06 22:26:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:13,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:13,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:13,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337656125] [2021-12-06 22:26:13,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:26:13,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:13,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:13,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:13,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:26:13,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:26:13,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:26:13,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:26:13,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:13,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:13,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:13,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786694828] [2021-12-06 22:26:13,835 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:13,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337656125] [2021-12-06 22:26:13,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337656125] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:13,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:26:13,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 22:26:13,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718509931] [2021-12-06 22:26:13,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:13,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:26:13,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:26:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:26:13,837 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:13,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:13,991 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-12-06 22:26:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 22:26:13,991 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 22:26:13,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:13,992 INFO L225 Difference]: With dead ends: 84 [2021-12-06 22:26:13,992 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 22:26:13,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:26:13,992 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 80 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:13,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 80 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:26:13,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 22:26:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 49. [2021-12-06 22:26:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2021-12-06 22:26:13,998 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 22 [2021-12-06 22:26:13,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:13,998 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2021-12-06 22:26:13,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2021-12-06 22:26:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 22:26:13,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:13,999 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:14,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 22:26:14,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 22:26:14,201 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:14,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:14,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1197174726, now seen corresponding path program 3 times [2021-12-06 22:26:14,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:14,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082095772] [2021-12-06 22:26:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:14,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:14,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:14,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297472564] [2021-12-06 22:26:14,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:26:14,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:14,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:14,221 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:14,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:26:14,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 22:26:14,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:26:14,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:26:14,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:26:14,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:26:14,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:14,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082095772] [2021-12-06 22:26:14,385 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:14,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297472564] [2021-12-06 22:26:14,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297472564] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:14,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:26:14,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-12-06 22:26:14,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133380250] [2021-12-06 22:26:14,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:14,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:26:14,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:26:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:26:14,386 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:14,481 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-12-06 22:26:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:26:14,482 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 22:26:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:14,482 INFO L225 Difference]: With dead ends: 72 [2021-12-06 22:26:14,482 INFO L226 Difference]: Without dead ends: 52 [2021-12-06 22:26:14,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:26:14,483 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:14,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 67 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:26:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-06 22:26:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2021-12-06 22:26:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:14,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-12-06 22:26:14,487 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 24 [2021-12-06 22:26:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:14,487 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-12-06 22:26:14,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-12-06 22:26:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 22:26:14,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:14,488 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:14,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 22:26:14,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 22:26:14,688 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 4 times [2021-12-06 22:26:14,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:14,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051865383] [2021-12-06 22:26:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:14,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:14,701 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:14,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555088476] [2021-12-06 22:26:14,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:26:14,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:14,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:14,702 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:14,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 22:26:14,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:26:14,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:26:14,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 22:26:14,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:14,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:26:14,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:14,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-12-06 22:26:14,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-12-06 22:26:14,894 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 8 treesize of output 7 [2021-12-06 22:26:14,896 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 8 treesize of output 7 [2021-12-06 22:26:14,922 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:26:14,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 59 [2021-12-06 22:26:14,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:14,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:14,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:14,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-06 22:26:14,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:14,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-12-06 22:26:14,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:14,968 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:26:14,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-12-06 22:26:15,013 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:26:15,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 125 [2021-12-06 22:26:15,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:26:15,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 153 [2021-12-06 22:26:15,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,060 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 103 treesize of output 64 [2021-12-06 22:26:15,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:15,128 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:26:15,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 44 [2021-12-06 22:26:15,233 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:26:15,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 32 [2021-12-06 22:26:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:15,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:17,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:17,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051865383] [2021-12-06 22:26:17,917 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:17,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555088476] [2021-12-06 22:26:17,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555088476] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:17,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:26:17,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 20 [2021-12-06 22:26:17,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133285007] [2021-12-06 22:26:17,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:17,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 22:26:17,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 22:26:17,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:26:17,919 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:18,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:18,330 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-12-06 22:26:18,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:26:18,330 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 22:26:18,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:18,332 INFO L225 Difference]: With dead ends: 63 [2021-12-06 22:26:18,332 INFO L226 Difference]: Without dead ends: 61 [2021-12-06 22:26:18,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2021-12-06 22:26:18,333 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:18,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 81 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 73 Unchecked, 0.0s Time] [2021-12-06 22:26:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-06 22:26:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 45. [2021-12-06 22:26:18,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-12-06 22:26:18,341 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 24 [2021-12-06 22:26:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:18,341 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-12-06 22:26:18,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:18,341 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-12-06 22:26:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 22:26:18,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:18,342 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:18,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 22:26:18,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 22:26:18,543 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:18,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 5 times [2021-12-06 22:26:18,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:18,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056445139] [2021-12-06 22:26:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:18,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:18,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:18,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216600825] [2021-12-06 22:26:18,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 22:26:18,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:18,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:18,564 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:18,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 22:26:25,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-06 22:26:25,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:26:25,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-06 22:26:25,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:25,184 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-06 22:26:25,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 51 [2021-12-06 22:26:25,188 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 8 treesize of output 7 [2021-12-06 22:26:25,192 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 8 treesize of output 7 [2021-12-06 22:26:25,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2021-12-06 22:26:25,207 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 5 treesize of output 3 [2021-12-06 22:26:25,221 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 7 treesize of output 3 [2021-12-06 22:26:25,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:26:25,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:26:25,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 64 [2021-12-06 22:26:25,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 27 [2021-12-06 22:26:25,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:26:25,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-12-06 22:26:25,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-06 22:26:25,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2021-12-06 22:26:25,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 120 [2021-12-06 22:26:25,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,386 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 118 treesize of output 163 [2021-12-06 22:26:25,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,424 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 108 treesize of output 67 [2021-12-06 22:26:25,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:25,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2021-12-06 22:26:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:26:25,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:29,709 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_487 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_487) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2021-12-06 22:26:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 5 not checked. [2021-12-06 22:26:29,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:29,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056445139] [2021-12-06 22:26:29,729 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:26:29,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216600825] [2021-12-06 22:26:29,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216600825] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:29,729 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:26:29,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2021-12-06 22:26:29,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802594781] [2021-12-06 22:26:29,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:29,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 22:26:29,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:29,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 22:26:29,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=195, Unknown=1, NotChecked=30, Total=306 [2021-12-06 22:26:29,730 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:33,023 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2021-12-06 22:26:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:26:33,023 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 22:26:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:33,023 INFO L225 Difference]: With dead ends: 63 [2021-12-06 22:26:33,023 INFO L226 Difference]: Without dead ends: 61 [2021-12-06 22:26:33,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=98, Invalid=247, Unknown=1, NotChecked=34, Total=380 [2021-12-06 22:26:33,024 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:33,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 79 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 88 Unchecked, 0.0s Time] [2021-12-06 22:26:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-06 22:26:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2021-12-06 22:26:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-12-06 22:26:33,029 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 24 [2021-12-06 22:26:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:33,029 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-12-06 22:26:33,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-12-06 22:26:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 22:26:33,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:33,030 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:33,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 22:26:33,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 22:26:33,231 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:33,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:33,233 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 5 times [2021-12-06 22:26:33,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:33,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942016161] [2021-12-06 22:26:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:33,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:33,271 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:26:33,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883999631] [2021-12-06 22:26:33,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 22:26:33,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:33,273 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:33,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 22:26:46,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-12-06 22:26:46,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:26:46,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-06 22:26:46,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:46,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:26:46,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-12-06 22:26:46,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-12-06 22:26:46,797 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 8 treesize of output 7 [2021-12-06 22:26:46,800 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 8 treesize of output 7 [2021-12-06 22:26:46,838 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:26:46,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 107 [2021-12-06 22:26:46,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:26:46,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 131 [2021-12-06 22:26:46,853 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:26:46,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,869 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 69 treesize of output 39 [2021-12-06 22:26:46,932 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:26:46,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 70 [2021-12-06 22:26:46,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,938 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 59 treesize of output 79 [2021-12-06 22:26:46,951 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:26:46,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:46,963 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 61 treesize of output 40 [2021-12-06 22:26:47,064 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:26:47,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 139 [2021-12-06 22:26:47,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:26:47,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 156 [2021-12-06 22:26:47,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,098 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 59 treesize of output 29 [2021-12-06 22:26:47,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:26:47,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:26:47,187 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-06 22:26:47,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 58 [2021-12-06 22:26:47,564 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-06 22:26:47,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 47 [2021-12-06 22:26:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:26:47,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:27:11,125 WARN L227 SmtUtils]: Spent 11.14s on a formula simplification that was a NOOP. DAG size: 175 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:27:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:11,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:11,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942016161] [2021-12-06 22:27:11,145 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:27:11,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883999631] [2021-12-06 22:27:11,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883999631] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:27:11,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:27:11,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 31 [2021-12-06 22:27:11,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87740229] [2021-12-06 22:27:11,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:27:11,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 22:27:11,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:11,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 22:27:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2021-12-06 22:27:11,147 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:52,463 INFO L93 Difference]: Finished difference Result 138 states and 155 transitions. [2021-12-06 22:27:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-06 22:27:52,463 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 22:27:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:52,464 INFO L225 Difference]: With dead ends: 138 [2021-12-06 22:27:52,464 INFO L226 Difference]: Without dead ends: 136 [2021-12-06 22:27:52,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=1123, Invalid=4278, Unknown=1, NotChecked=0, Total=5402 [2021-12-06 22:27:52,466 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 149 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:52,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 239 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 347 Invalid, 0 Unknown, 142 Unchecked, 4.6s Time] [2021-12-06 22:27:52,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-06 22:27:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2021-12-06 22:27:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1486486486486487) internal successors, (85), 74 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2021-12-06 22:27:52,474 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 28 [2021-12-06 22:27:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:52,474 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2021-12-06 22:27:52,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:52,475 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2021-12-06 22:27:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 22:27:52,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:52,475 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:52,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 22:27:52,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:52,676 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1412338184, now seen corresponding path program 6 times [2021-12-06 22:27:52,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:52,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382516951] [2021-12-06 22:27:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:52,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:52,697 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:27:52,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804507412] [2021-12-06 22:27:52,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 22:27:52,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:52,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:52,698 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:52,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 22:27:52,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 22:27:52,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:27:52,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:27:52,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:27:52,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:27:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:27:52,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:52,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382516951] [2021-12-06 22:27:52,930 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:27:52,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804507412] [2021-12-06 22:27:52,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804507412] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:27:52,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:27:52,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 22:27:52,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576372905] [2021-12-06 22:27:52,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:27:52,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:27:52,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:52,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:27:52,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:27:52,931 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:53,066 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-12-06 22:27:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:27:53,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 22:27:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:53,067 INFO L225 Difference]: With dead ends: 124 [2021-12-06 22:27:53,067 INFO L226 Difference]: Without dead ends: 90 [2021-12-06 22:27:53,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:27:53,068 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:53,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 65 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:27:53,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-06 22:27:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2021-12-06 22:27:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 62 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2021-12-06 22:27:53,074 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 28 [2021-12-06 22:27:53,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:53,074 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2021-12-06 22:27:53,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2021-12-06 22:27:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 22:27:53,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:53,075 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:53,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 22:27:53,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 22:27:53,276 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:53,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash 48972360, now seen corresponding path program 7 times [2021-12-06 22:27:53,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:53,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011485287] [2021-12-06 22:27:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:53,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:53,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:27:53,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367176955] [2021-12-06 22:27:53,310 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 22:27:53,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:53,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:53,311 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:53,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 22:27:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:53,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-06 22:27:53,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:53,704 INFO L354 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2021-12-06 22:27:53,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2021-12-06 22:27:53,726 INFO L354 Elim1Store]: treesize reduction 26, result has 50.9 percent of original size [2021-12-06 22:27:53,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 72 [2021-12-06 22:27:53,735 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 8 treesize of output 7 [2021-12-06 22:27:53,753 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 8 treesize of output 7 [2021-12-06 22:27:53,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-12-06 22:27:53,769 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:27:53,779 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 5 treesize of output 3 [2021-12-06 22:27:53,799 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:27:53,812 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 7 treesize of output 3 [2021-12-06 22:27:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:53,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 16 [2021-12-06 22:27:53,835 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 5 treesize of output 3 [2021-12-06 22:27:53,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:27:53,898 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:27:53,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 107 [2021-12-06 22:27:53,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:53,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:27:53,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:53,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:53,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:53,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:53,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:53,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 131 [2021-12-06 22:27:53,916 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:27:53,925 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:27:53,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:53,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:53,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:53,961 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 112 treesize of output 53 [2021-12-06 22:27:54,014 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:27:54,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 114 [2021-12-06 22:27:54,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:27:54,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 144 [2021-12-06 22:27:54,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,085 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 106 treesize of output 65 [2021-12-06 22:27:54,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,166 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:27:54,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 56 [2021-12-06 22:27:54,277 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:27:54,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 166 treesize of output 148 [2021-12-06 22:27:54,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:27:54,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 156 [2021-12-06 22:27:54,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,302 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 69 treesize of output 39 [2021-12-06 22:27:54,470 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:27:54,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 204 treesize of output 180 [2021-12-06 22:27:54,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 194 [2021-12-06 22:27:54,496 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:27:54,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,598 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 212 treesize of output 123 [2021-12-06 22:27:54,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:27:54,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:54,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:27:54,739 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:27:54,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 106 treesize of output 84 [2021-12-06 22:27:55,035 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-12-06 22:27:55,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 50 [2021-12-06 22:27:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:55,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:28:12,417 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 162 DAG size of output: 144 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:28:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:28:53,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:53,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011485287] [2021-12-06 22:28:53,813 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:28:53,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367176955] [2021-12-06 22:28:53,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367176955] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:28:53,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:28:53,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-12-06 22:28:53,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111954451] [2021-12-06 22:28:53,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:28:53,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 22:28:53,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:53,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 22:28:53,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=750, Unknown=11, NotChecked=0, Total=930 [2021-12-06 22:28:53,814 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:29:00,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:00,926 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2021-12-06 22:29:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 22:29:00,926 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 22:29:00,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:00,927 INFO L225 Difference]: With dead ends: 104 [2021-12-06 22:29:00,927 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 22:29:00,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 57.3s TimeCoverageRelationStatistics Valid=231, Invalid=1090, Unknown=11, NotChecked=0, Total=1332 [2021-12-06 22:29:00,928 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:00,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 82 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2021-12-06 22:29:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 22:29:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2021-12-06 22:29:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 89 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:29:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-12-06 22:29:00,937 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 28 [2021-12-06 22:29:00,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:00,937 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-12-06 22:29:00,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:29:00,938 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-12-06 22:29:00,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 22:29:00,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:00,938 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:00,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 22:29:01,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 22:29:01,139 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:01,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash -184451956, now seen corresponding path program 6 times [2021-12-06 22:29:01,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:01,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086223554] [2021-12-06 22:29:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:01,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:01,191 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:29:01,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109723532] [2021-12-06 22:29:01,191 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 22:29:01,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:01,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:01,192 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:01,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 22:29:02,798 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 22:29:02,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:29:02,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 22:29:02,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 22:29:02,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 22:29:02,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:02,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086223554] [2021-12-06 22:29:02,934 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:29:02,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109723532] [2021-12-06 22:29:02,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109723532] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:02,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:29:02,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-06 22:29:02,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147286786] [2021-12-06 22:29:02,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:02,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:29:02,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:02,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:29:02,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:29:02,936 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:29:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:03,232 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2021-12-06 22:29:03,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 22:29:03,233 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 22:29:03,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:03,233 INFO L225 Difference]: With dead ends: 151 [2021-12-06 22:29:03,233 INFO L226 Difference]: Without dead ends: 108 [2021-12-06 22:29:03,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2021-12-06 22:29:03,234 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 165 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:03,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 100 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:29:03,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-06 22:29:03,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 63. [2021-12-06 22:29:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 62 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:29:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2021-12-06 22:29:03,241 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 30 [2021-12-06 22:29:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:03,241 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2021-12-06 22:29:03,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:29:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2021-12-06 22:29:03,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 22:29:03,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:03,242 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:03,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 22:29:03,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 22:29:03,443 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1146912830, now seen corresponding path program 8 times [2021-12-06 22:29:03,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:03,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005365553] [2021-12-06 22:29:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:03,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:03,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:29:03,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502419000] [2021-12-06 22:29:03,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:29:03,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:03,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:03,487 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:03,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 22:29:03,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:29:03,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:29:03,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-06 22:29:03,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:03,932 INFO L354 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2021-12-06 22:29:03,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2021-12-06 22:29:03,935 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-12-06 22:29:03,958 INFO L354 Elim1Store]: treesize reduction 23, result has 54.0 percent of original size [2021-12-06 22:29:03,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 69 [2021-12-06 22:29:03,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:03,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 12 [2021-12-06 22:29:03,975 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 5 treesize of output 3 [2021-12-06 22:29:03,988 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 8 treesize of output 6 [2021-12-06 22:29:04,014 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 8 treesize of output 7 [2021-12-06 22:29:04,019 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 8 treesize of output 7 [2021-12-06 22:29:04,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-06 22:29:04,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:29:04,086 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:29:04,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 107 [2021-12-06 22:29:04,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:04,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 131 [2021-12-06 22:29:04,109 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:29:04,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,124 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 154 treesize of output 75 [2021-12-06 22:29:04,190 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:29:04,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 70 [2021-12-06 22:29:04,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,196 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 59 treesize of output 79 [2021-12-06 22:29:04,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,218 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 61 treesize of output 38 [2021-12-06 22:29:04,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,258 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:29:04,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2021-12-06 22:29:04,336 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:29:04,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 175 treesize of output 159 [2021-12-06 22:29:04,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:04,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 156 [2021-12-06 22:29:04,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,363 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 59 treesize of output 29 [2021-12-06 22:29:04,464 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:29:04,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 145 [2021-12-06 22:29:04,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:04,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 172 [2021-12-06 22:29:04,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,559 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 108 treesize of output 67 [2021-12-06 22:29:04,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:04,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:04,668 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-06 22:29:04,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 70 [2021-12-06 22:29:04,942 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-06 22:29:04,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 42 [2021-12-06 22:29:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:04,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:16,150 WARN L227 SmtUtils]: Spent 18.86s on a formula simplification. DAG size of input: 196 DAG size of output: 156 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:30:16,166 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:16,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:16,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005365553] [2021-12-06 22:30:16,166 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:30:16,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502419000] [2021-12-06 22:30:16,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502419000] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:16,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:30:16,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 30 [2021-12-06 22:30:16,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831309713] [2021-12-06 22:30:16,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:16,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 22:30:16,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 22:30:16,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=724, Unknown=12, NotChecked=0, Total=870 [2021-12-06 22:30:16,168 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:24,586 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2021-12-06 22:30:24,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 22:30:24,587 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-06 22:30:24,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:24,587 INFO L225 Difference]: With dead ends: 81 [2021-12-06 22:30:24,587 INFO L226 Difference]: Without dead ends: 79 [2021-12-06 22:30:24,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 75.7s TimeCoverageRelationStatistics Valid=231, Invalid=1238, Unknown=13, NotChecked=0, Total=1482 [2021-12-06 22:30:24,588 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 184 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:24,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 120 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 87 Invalid, 0 Unknown, 184 Unchecked, 0.2s Time] [2021-12-06 22:30:24,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-06 22:30:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2021-12-06 22:30:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 66 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2021-12-06 22:30:24,596 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 32 [2021-12-06 22:30:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:24,596 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2021-12-06 22:30:24,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2021-12-06 22:30:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 22:30:24,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:24,596 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:24,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 22:30:24,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:24,798 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:30:24,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:24,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1910230140, now seen corresponding path program 9 times [2021-12-06 22:30:24,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:24,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854824496] [2021-12-06 22:30:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:24,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:24,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:30:24,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168499471] [2021-12-06 22:30:24,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:30:24,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:24,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:24,840 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:24,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 22:30:26,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 22:30:26,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:30:26,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-06 22:30:26,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:26,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 22:30:26,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-12-06 22:30:26,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-12-06 22:30:26,107 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 8 treesize of output 7 [2021-12-06 22:30:26,110 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 8 treesize of output 7 [2021-12-06 22:30:26,163 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:30:26,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 59 [2021-12-06 22:30:26,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-06 22:30:26,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2021-12-06 22:30:26,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,239 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:30:26,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-12-06 22:30:26,303 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 22:30:26,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 63 [2021-12-06 22:30:26,323 INFO L354 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2021-12-06 22:30:26,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 68 [2021-12-06 22:30:26,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 22:30:26,370 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:30:26,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2021-12-06 22:30:26,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2021-12-06 22:30:26,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 69 [2021-12-06 22:30:26,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,526 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-12-06 22:30:26,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 78 [2021-12-06 22:30:26,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-12-06 22:30:26,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:26,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 42 [2021-12-06 22:30:27,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 156 [2021-12-06 22:30:27,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:27,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 153 [2021-12-06 22:30:27,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,477 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 103 treesize of output 64 [2021-12-06 22:30:27,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 103 [2021-12-06 22:30:27,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,794 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 63 treesize of output 83 [2021-12-06 22:30:27,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:27,875 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 65 treesize of output 42 [2021-12-06 22:30:28,022 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:30:28,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 70 [2021-12-06 22:30:28,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,029 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 61 treesize of output 83 [2021-12-06 22:30:28,051 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:30:28,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 26 [2021-12-06 22:30:28,206 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 22:30:28,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 70 [2021-12-06 22:30:28,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,216 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 61 treesize of output 83 [2021-12-06 22:30:28,234 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:30:28,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:28,264 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 50 treesize of output 33 [2021-12-06 22:30:28,709 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:30:28,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 32 [2021-12-06 22:30:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:28,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:31:53,319 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_197| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_197| 4) (and (forall ((|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int)) (let ((.cse8 (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|))) (let ((.cse9 (+ .cse8 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (.cse7 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (let ((.cse3 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (forall ((v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse2 (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse0 .cse1 (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse1)))) (< 2147483647 .cse3)) (or (forall ((v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse5 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse6 (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse4 .cse5 (+ (select .cse4 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse5)))) (<= .cse3 2147483647)))) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 0) (<= c_~N~0 (+ .cse7 .cse8 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (< 2147483648 .cse9) (< .cse9 1) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) (< (+ .cse7 .cse8 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 1) c_~N~0))))) (forall ((|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int)) (let ((.cse12 (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|))) (let ((.cse10 (+ .cse12 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (.cse11 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (<= .cse10 2147483648) (<= 4294967297 .cse10) (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) (<= c_~N~0 (+ .cse11 .cse12 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (let ((.cse16 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (forall ((v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse14 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse15 (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse13 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse15) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse13 .cse14 (+ (select .cse15 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse13 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse14)))) (< 2147483647 .cse16)) (or (<= .cse16 2147483647) (forall ((v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= (let ((.cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse19 (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse17 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse19) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse17 .cse18 (+ (select .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse18)) 5))))) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 2147483647) (< (+ .cse11 .cse12 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 1) c_~N~0))))) (forall ((|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int)) (let ((.cse28 (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|))) (let ((.cse29 (+ .cse28 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (.cse27 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (let ((.cse23 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (forall ((v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse21 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse22 (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse20 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse20 .cse21 (+ (select .cse20 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse21)))) (< 2147483647 .cse23)) (or (forall ((v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= (let ((.cse25 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse26 (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse24 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse24 .cse25 (+ (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse26 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse25)) 5)) (<= .cse23 2147483647)))) (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) (<= c_~N~0 (+ .cse27 .cse28 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (< 2147483648 .cse29) (< .cse29 1) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 2147483647) (< (+ .cse27 .cse28 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 1) c_~N~0))))) (forall ((|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int)) (let ((.cse32 (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|))) (let ((.cse30 (+ .cse32 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (.cse31 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (<= .cse30 2147483648) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 0) (<= 4294967297 .cse30) (<= c_~N~0 (+ .cse31 .cse32 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (let ((.cse36 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (forall ((v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse34 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse35 (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse33 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse35) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse33 .cse34 (+ (select .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse33 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse34)))) (< 2147483647 .cse36)) (or (<= .cse36 2147483647) (forall ((v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse38 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse39 (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse37 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse39) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse37 .cse38 (+ (select .cse37 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse39 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse38))))))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) (< (+ .cse31 .cse32 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 1) c_~N~0)))))) (<= c_~N~0 |v_ULTIMATE.start_main_~i~0#1_197|) (< (+ |v_ULTIMATE.start_main_~i~0#1_197| 1) c_~N~0))) is different from true [2021-12-06 22:36:00,892 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_197| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_197| 4) (and (forall ((|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int)) (let ((.cse1 (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|))) (let ((.cse2 (+ .cse1 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (.cse0 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) (<= c_~N~0 (+ .cse0 .cse1 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (< 2147483648 .cse2) (< .cse2 1) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 2147483647) (let ((.cse18 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse7 (<= .cse18 2147483647)) (.cse6 (< 2147483647 .cse18)) (.cse11 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (and (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse5 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse3 .cse4 (+ (select .cse3 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse4)))) .cse6) (or .cse7 (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= (let ((.cse9 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse10 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse8 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse10) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse8 .cse9 (+ (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse8 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse9)) 5)))) (<= .cse11 2147483647)) (or (and (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse13 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse14 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse12 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse12 .cse13 (+ (select .cse14 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse13)))) .cse7) (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= (let ((.cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse17 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse15 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse17) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse15 .cse16 (+ (select .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse16)) 5)) .cse6)) (< 2147483647 .cse11))))) (< (+ .cse0 .cse1 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 1) c_~N~0))))) (forall ((|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int)) (let ((.cse21 (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|))) (let ((.cse19 (+ .cse21 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (.cse20 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (<= .cse19 2147483648) (<= 4294967297 .cse19) (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) (<= c_~N~0 (+ .cse20 .cse21 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (let ((.cse37 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse30 (< 2147483647 .cse37)) (.cse23 (<= .cse37 2147483647)) (.cse22 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (< 2147483647 .cse22) (and (or .cse23 (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= (let ((.cse25 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse26 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse24 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse24 .cse25 (+ (select .cse26 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse25)) 5))) (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse28 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse29 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse27 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse29) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse27 .cse28 (+ (select .cse29 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse28)))) .cse30))) (or (and (or .cse30 (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse32 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse33 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse31 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse33) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse31 .cse32 (+ (select .cse31 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse32))))) (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse35 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse36 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8) (- 34359738368)) v_ArrVal_848))) (let ((.cse34 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse36) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse34 .cse35 (+ (select .cse36 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse35)))) .cse23)) (<= .cse22 2147483647))))) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 2147483647) (< (+ .cse20 .cse21 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 1) c_~N~0))))) (forall ((|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int)) (let ((.cse39 (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|))) (let ((.cse40 (+ .cse39 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (.cse38 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 0) (<= c_~N~0 (+ .cse38 .cse39 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (< 2147483648 .cse40) (< .cse40 1) (let ((.cse56 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse49 (<= .cse56 2147483647)) (.cse45 (< 2147483647 .cse56)) (.cse41 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (<= .cse41 2147483647) (and (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= (let ((.cse43 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse44 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse42 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse44) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse42 .cse43 (+ (select .cse44 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse42 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse43)) 5)) .cse45) (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= (let ((.cse47 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse48 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse46 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse48) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse46 .cse47 (+ (select .cse48 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse47)) 5)) .cse49))) (or (and (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= (let ((.cse51 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse52 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse50 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse52) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse50 .cse51 (+ (select .cse50 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse52 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse51)) 5)) .cse49) (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse54 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse55 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse53 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse55) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse53 .cse54 (+ (select .cse55 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse53 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse54)))) .cse45)) (< 2147483647 .cse41))))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) (< (+ .cse38 .cse39 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 1) c_~N~0))))) (forall ((|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| Int)) (let ((.cse59 (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|))) (let ((.cse57 (+ .cse59 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (.cse58 (* 4294967296 |aux_div_ULTIMATE.start_main_~i~0#1_45|))) (or (<= .cse57 2147483648) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 0) (<= 4294967297 .cse57) (<= c_~N~0 (+ .cse58 .cse59 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|)) (let ((.cse75 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse65 (<= .cse75 2147483647)) (.cse64 (< 2147483647 .cse75)) (.cse60 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (<= .cse60 2147483647) (and (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= (let ((.cse62 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse63 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse61 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse63) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse61 .cse62 (+ (select .cse61 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse63 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse62)) 5)) .cse64) (or .cse65 (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse67 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse68 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse66 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse68) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse66 .cse67 (+ (select .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse66 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse67))))))) (or (and (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse70 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse71 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse69 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse71) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse69 .cse70 (+ (select .cse69 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse71 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse70)))) .cse65) (or (forall ((v_ArrVal_841 Int) (v_ArrVal_851 Int) (v_ArrVal_848 Int) (v_ArrVal_846 Int) (v_ArrVal_856 Int) (v_ArrVal_844 Int) (v_ArrVal_853 Int)) (= 5 (let ((.cse73 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8))) (select (store (store (store (let ((.cse74 (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_841) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_844) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 4294967295 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) 4294967296) 8) (- 34359738368)) v_ArrVal_846) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 4294967296) 8)) v_ArrVal_848))) (let ((.cse72 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse74) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse72 .cse73 (+ (select .cse74 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse72 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_851) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_853) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_197| 4294967296) 8)) v_ArrVal_856) .cse73)))) .cse64)) (< 2147483647 .cse60))))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62|) (< (+ .cse58 .cse59 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_62| 1) c_~N~0)))))) (<= c_~N~0 |v_ULTIMATE.start_main_~i~0#1_197|) (< (+ |v_ULTIMATE.start_main_~i~0#1_197| 1) c_~N~0))) is different from true [2021-12-06 22:36:01,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:01,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:06,120 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 22:36:06,121 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:06,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 949 treesize of output 765 [2021-12-06 22:36:06,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:06,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:06,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 401 treesize of output 389 [2021-12-06 22:36:06,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:06,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854824496] [2021-12-06 22:36:06,148 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:36:06,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168499471] [2021-12-06 22:36:06,148 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-12-06 22:36:06,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:36:06,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-12-06 22:36:06,148 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-12-06 22:36:06,149 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-12-06 22:36:06,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 22:36:06,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 22:36:06,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:06,357 INFO L732 BasicCegarLoop]: Path program histogram: [9, 6, 1, 1, 1, 1, 1] [2021-12-06 22:36:06,359 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:36:06,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:36:06 BoogieIcfgContainer [2021-12-06 22:36:06,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:36:06,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:36:06,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:36:06,370 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:36:06,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:26:06" (3/4) ... [2021-12-06 22:36:06,372 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 22:36:06,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:36:06,373 INFO L158 Benchmark]: Toolchain (without parser) took 599925.63ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 72.7MB in the beginning and 53.5MB in the end (delta: 19.2MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2021-12-06 22:36:06,373 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:36:06,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.98ms. Allocated memory is still 102.8MB. Free memory was 72.6MB in the beginning and 62.3MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 22:36:06,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.33ms. Allocated memory is still 102.8MB. Free memory was 62.3MB in the beginning and 60.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:36:06,373 INFO L158 Benchmark]: Boogie Preprocessor took 19.30ms. Allocated memory is still 102.8MB. Free memory was 60.5MB in the beginning and 59.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:36:06,373 INFO L158 Benchmark]: RCFGBuilder took 251.62ms. Allocated memory is still 102.8MB. Free memory was 59.2MB in the beginning and 48.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 22:36:06,374 INFO L158 Benchmark]: TraceAbstraction took 599442.17ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 47.9MB in the beginning and 53.5MB in the end (delta: -5.6MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2021-12-06 22:36:06,374 INFO L158 Benchmark]: Witness Printer took 2.37ms. Allocated memory is still 123.7MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:36:06,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.98ms. Allocated memory is still 102.8MB. Free memory was 72.6MB in the beginning and 62.3MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.33ms. Allocated memory is still 102.8MB. Free memory was 62.3MB in the beginning and 60.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.30ms. Allocated memory is still 102.8MB. Free memory was 60.5MB in the beginning and 59.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 251.62ms. Allocated memory is still 102.8MB. Free memory was 59.2MB in the beginning and 48.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 599442.17ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 47.9MB in the beginning and 53.5MB in the end (delta: -5.6MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. * Witness Printer took 2.37ms. Allocated memory is still 123.7MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] long long i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 4 [L32] b[0] = 1 [L34] i=1 [L34] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/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 -> 6c5e7a5b5183897e81f3d009c328161669eb0a8a3042b507053cc41bb75da51c [2021-12-06 22:36:08,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:36:08,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:36:08,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:36:08,344 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:36:08,344 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:36:08,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-fpi/eqn2.c [2021-12-06 22:36:08,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/data/fc5880873/2833798f99074716b761fc20dba1e613/FLAG6cec68683 [2021-12-06 22:36:08,766 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:36:08,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/sv-benchmarks/c/array-fpi/eqn2.c [2021-12-06 22:36:08,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/data/fc5880873/2833798f99074716b761fc20dba1e613/FLAG6cec68683 [2021-12-06 22:36:08,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/data/fc5880873/2833798f99074716b761fc20dba1e613 [2021-12-06 22:36:08,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:36:08,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:36:08,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:36:08,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:36:08,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:36:08,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:08,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fff00a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08, skipping insertion in model container [2021-12-06 22:36:08,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:08,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:36:08,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:36:08,907 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_d665115c-115c-443b-8e93-5bc368fc62e1/sv-benchmarks/c/array-fpi/eqn2.c[587,600] [2021-12-06 22:36:08,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:36:08,932 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:36:08,950 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_d665115c-115c-443b-8e93-5bc368fc62e1/sv-benchmarks/c/array-fpi/eqn2.c[587,600] [2021-12-06 22:36:08,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:36:08,981 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:36:08,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08 WrapperNode [2021-12-06 22:36:08,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:36:08,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:36:08,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:36:08,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:36:08,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:08,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:09,018 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2021-12-06 22:36:09,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:36:09,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:36:09,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:36:09,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:36:09,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:09,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:09,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:09,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:09,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:09,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:09,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:09,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:36:09,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:36:09,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:36:09,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:36:09,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (1/1) ... [2021-12-06 22:36:09,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:36:09,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:36:09,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:36:09,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:36:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:36:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 22:36:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-06 22:36:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:36:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:36:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:36:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-06 22:36:09,178 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:36:09,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:36:09,357 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:36:09,363 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:36:09,363 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 22:36:09,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:36:09 BoogieIcfgContainer [2021-12-06 22:36:09,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:36:09,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:36:09,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:36:09,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:36:09,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:36:08" (1/3) ... [2021-12-06 22:36:09,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3a7648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:36:09, skipping insertion in model container [2021-12-06 22:36:09,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:36:08" (2/3) ... [2021-12-06 22:36:09,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3a7648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:36:09, skipping insertion in model container [2021-12-06 22:36:09,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:36:09" (3/3) ... [2021-12-06 22:36:09,374 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2.c [2021-12-06 22:36:09,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:36:09,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:36:09,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:36:09,429 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:36:09,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:36:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:36:09,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:09,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:09,447 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2021-12-06 22:36:09,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:09,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688236671] [2021-12-06 22:36:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:09,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:09,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:09,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:09,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 22:36:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:09,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 22:36:09,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:09,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:36:09,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:09,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688236671] [2021-12-06 22:36:09,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688236671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:09,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:36:09,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:36:09,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66831406] [2021-12-06 22:36:09,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:09,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:36:09,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:09,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:36:09,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:36:09,636 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:09,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:09,646 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-12-06 22:36:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:36:09,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 22:36:09,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:09,653 INFO L225 Difference]: With dead ends: 38 [2021-12-06 22:36:09,653 INFO L226 Difference]: Without dead ends: 17 [2021-12-06 22:36:09,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:36:09,658 INFO L933 BasicCegarLoop]: 24 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, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:09,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:36:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-06 22:36:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-06 22:36:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-12-06 22:36:09,682 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-12-06 22:36:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:09,683 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-06 22:36:09,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-12-06 22:36:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:36:09,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:09,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:09,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:36:09,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:09,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:09,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:09,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2021-12-06 22:36:09,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:09,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770418659] [2021-12-06 22:36:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:09,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:09,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:09,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:09,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 22:36:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:09,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 22:36:09,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:10,089 INFO L354 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2021-12-06 22:36:10,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 50 treesize of output 65 [2021-12-06 22:36:10,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:10,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:10,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2021-12-06 22:36:10,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:10,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:10,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2021-12-06 22:36:10,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:10,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 9 [2021-12-06 22:36:10,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:36:10,586 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:10,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 53 treesize of output 29 [2021-12-06 22:36:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:10,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:36:10,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:10,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770418659] [2021-12-06 22:36:10,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770418659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:10,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:36:10,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:36:10,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813540135] [2021-12-06 22:36:10,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:10,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:36:10,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:36:10,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:36:10,606 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:10,931 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-12-06 22:36:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:36:10,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 22:36:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:10,932 INFO L225 Difference]: With dead ends: 34 [2021-12-06 22:36:10,933 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 22:36:10,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:36:10,934 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:10,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 56 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:36:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 22:36:10,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2021-12-06 22:36:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-12-06 22:36:10,939 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-12-06 22:36:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:10,939 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-12-06 22:36:10,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:10,939 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-12-06 22:36:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 22:36:10,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:10,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:10,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 22:36:11,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:11,142 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:11,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2021-12-06 22:36:11,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:11,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292666053] [2021-12-06 22:36:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:11,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:11,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:11,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:11,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 22:36:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:11,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:36:11,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:11,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:36:11,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:11,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292666053] [2021-12-06 22:36:11,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292666053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:11,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:36:11,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:36:11,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750823529] [2021-12-06 22:36:11,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:11,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:36:11,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:11,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:36:11,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:36:11,344 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:11,612 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-12-06 22:36:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:36:11,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 22:36:11,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:11,619 INFO L225 Difference]: With dead ends: 42 [2021-12-06 22:36:11,620 INFO L226 Difference]: Without dead ends: 33 [2021-12-06 22:36:11,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:36:11,621 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 68 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:11,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 25 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:36:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-06 22:36:11,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2021-12-06 22:36:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-12-06 22:36:11,627 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2021-12-06 22:36:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:11,627 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-12-06 22:36:11,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-12-06 22:36:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 22:36:11,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:11,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:11,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 22:36:11,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:11,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:11,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:11,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2021-12-06 22:36:11,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:11,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146968155] [2021-12-06 22:36:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:11,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:11,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:11,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:11,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 22:36:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:11,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 22:36:11,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:12,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:12,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:12,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146968155] [2021-12-06 22:36:12,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146968155] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:12,249 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:36:12,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2021-12-06 22:36:12,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587421759] [2021-12-06 22:36:12,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:12,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:36:12,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:36:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:36:12,251 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:13,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:13,002 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-12-06 22:36:13,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:36:13,003 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 22:36:13,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:13,004 INFO L225 Difference]: With dead ends: 58 [2021-12-06 22:36:13,004 INFO L226 Difference]: Without dead ends: 49 [2021-12-06 22:36:13,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2021-12-06 22:36:13,006 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:13,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 51 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:36:13,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-06 22:36:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2021-12-06 22:36:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-12-06 22:36:13,011 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 14 [2021-12-06 22:36:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:13,011 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-12-06 22:36:13,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-12-06 22:36:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 22:36:13,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:13,012 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:13,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 22:36:13,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:13,214 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2021-12-06 22:36:13,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:13,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182739425] [2021-12-06 22:36:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:13,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:13,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:13,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:13,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 22:36:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:13,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:36:13,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:13,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:13,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:13,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182739425] [2021-12-06 22:36:13,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182739425] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:13,600 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:36:13,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-12-06 22:36:13,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130625698] [2021-12-06 22:36:13,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:13,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:36:13,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:13,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:36:13,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:36:13,601 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:14,011 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2021-12-06 22:36:14,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:36:14,017 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 22:36:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:14,018 INFO L225 Difference]: With dead ends: 41 [2021-12-06 22:36:14,018 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 22:36:14,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:36:14,019 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 69 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:14,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 31 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:36:14,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 22:36:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-12-06 22:36:14,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-12-06 22:36:14,023 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2021-12-06 22:36:14,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:14,023 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-12-06 22:36:14,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-12-06 22:36:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 22:36:14,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:14,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:14,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 22:36:14,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:14,225 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2021-12-06 22:36:14,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:14,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944374638] [2021-12-06 22:36:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:14,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:14,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:14,230 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:14,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 22:36:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:14,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 22:36:14,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:14,446 INFO L354 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2021-12-06 22:36:14,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 50 treesize of output 65 [2021-12-06 22:36:14,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2021-12-06 22:36:14,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2021-12-06 22:36:14,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 7 [2021-12-06 22:36:14,530 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:36:14,544 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 18 [2021-12-06 22:36:14,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-12-06 22:36:14,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:14,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:14,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 43 [2021-12-06 22:36:14,697 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:14,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 53 treesize of output 29 [2021-12-06 22:36:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:14,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:15,713 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_108 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 64) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_108) |c_ULTIMATE.start_main_~b~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|))))) is different from false [2021-12-06 22:36:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-06 22:36:15,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:15,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944374638] [2021-12-06 22:36:15,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944374638] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:15,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:36:15,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-06 22:36:15,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491579230] [2021-12-06 22:36:15,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:15,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:36:15,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:36:15,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2021-12-06 22:36:15,731 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:16,649 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-12-06 22:36:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:36:16,656 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 22:36:16,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:16,657 INFO L225 Difference]: With dead ends: 45 [2021-12-06 22:36:16,657 INFO L226 Difference]: Without dead ends: 43 [2021-12-06 22:36:16,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=71, Invalid=172, Unknown=1, NotChecked=28, Total=272 [2021-12-06 22:36:16,658 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:16,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 106 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 33 Unchecked, 0.7s Time] [2021-12-06 22:36:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-06 22:36:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2021-12-06 22:36:16,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-12-06 22:36:16,663 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2021-12-06 22:36:16,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:16,663 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-12-06 22:36:16,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:16,663 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-12-06 22:36:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 22:36:16,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:16,664 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:16,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 22:36:16,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:16,866 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:16,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:16,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 2 times [2021-12-06 22:36:16,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:16,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523144047] [2021-12-06 22:36:16,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:36:16,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:16,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:16,872 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:16,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 22:36:17,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:36:17,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:36:17,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:36:17,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:17,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:17,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:17,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523144047] [2021-12-06 22:36:17,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523144047] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:17,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:36:17,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-12-06 22:36:17,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22951691] [2021-12-06 22:36:17,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:17,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 22:36:17,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 22:36:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:36:17,686 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:19,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:19,130 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2021-12-06 22:36:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:36:19,131 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-06 22:36:19,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:19,132 INFO L225 Difference]: With dead ends: 81 [2021-12-06 22:36:19,132 INFO L226 Difference]: Without dead ends: 72 [2021-12-06 22:36:19,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 22:36:19,133 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 208 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:19,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 59 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:36:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-06 22:36:19,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 38. [2021-12-06 22:36:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-12-06 22:36:19,139 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 18 [2021-12-06 22:36:19,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:19,139 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-12-06 22:36:19,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:19,139 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-12-06 22:36:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 22:36:19,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:19,140 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:19,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 22:36:19,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:19,342 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:19,343 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2021-12-06 22:36:19,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:19,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893718281] [2021-12-06 22:36:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:19,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:19,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:19,348 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:19,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 22:36:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:19,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 22:36:19,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:19,633 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 18 [2021-12-06 22:36:19,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:19,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 37 [2021-12-06 22:36:19,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:19,734 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-06 22:36:19,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 63 [2021-12-06 22:36:19,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:19,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:19,837 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-06 22:36:19,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 75 [2021-12-06 22:36:20,211 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-06 22:36:20,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 117 treesize of output 57 [2021-12-06 22:36:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:20,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:24,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:24,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893718281] [2021-12-06 22:36:24,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893718281] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:24,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:36:24,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-12-06 22:36:24,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130385343] [2021-12-06 22:36:24,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:24,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:36:24,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:36:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:36:24,363 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:26,695 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-12-06 22:36:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:36:26,703 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 22:36:26,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:26,704 INFO L225 Difference]: With dead ends: 47 [2021-12-06 22:36:26,704 INFO L226 Difference]: Without dead ends: 45 [2021-12-06 22:36:26,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:36:26,705 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:26,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 66 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 25 Unchecked, 0.8s Time] [2021-12-06 22:36:26,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-06 22:36:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-12-06 22:36:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-12-06 22:36:26,711 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 20 [2021-12-06 22:36:26,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:26,711 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-12-06 22:36:26,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-12-06 22:36:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 22:36:26,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:26,712 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:26,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 22:36:26,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:26,914 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:26,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 3 times [2021-12-06 22:36:26,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:26,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949753618] [2021-12-06 22:36:26,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:36:26,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:26,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:26,919 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:26,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 22:36:27,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 22:36:27,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:36:27,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 22:36:27,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:27,279 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 24 [2021-12-06 22:36:27,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 22:36:27,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2021-12-06 22:36:27,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-12-06 22:36:27,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-12-06 22:36:27,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,425 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:27,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 50 [2021-12-06 22:36:27,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,468 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:27,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 43 [2021-12-06 22:36:27,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:27,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 53 treesize of output 29 [2021-12-06 22:36:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:36:27,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:29,186 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_206 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 64) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_206) |c_ULTIMATE.start_main_~b~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|))))) is different from false [2021-12-06 22:36:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2021-12-06 22:36:29,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:29,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949753618] [2021-12-06 22:36:29,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949753618] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:29,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:36:29,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-12-06 22:36:29,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526270604] [2021-12-06 22:36:29,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:29,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:36:29,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:29,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:36:29,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=135, Unknown=1, NotChecked=24, Total=210 [2021-12-06 22:36:29,216 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:31,366 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2021-12-06 22:36:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 22:36:31,374 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 22:36:31,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:31,375 INFO L225 Difference]: With dead ends: 73 [2021-12-06 22:36:31,375 INFO L226 Difference]: Without dead ends: 71 [2021-12-06 22:36:31,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=158, Invalid=495, Unknown=1, NotChecked=48, Total=702 [2021-12-06 22:36:31,376 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:31,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 67 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 45 Invalid, 0 Unknown, 67 Unchecked, 0.8s Time] [2021-12-06 22:36:31,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-06 22:36:31,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 47. [2021-12-06 22:36:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-12-06 22:36:31,383 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 20 [2021-12-06 22:36:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:31,383 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-12-06 22:36:31,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-12-06 22:36:31,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 22:36:31,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:31,384 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:31,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 22:36:31,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:31,586 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:31,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1197174726, now seen corresponding path program 2 times [2021-12-06 22:36:31,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:31,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16595268] [2021-12-06 22:36:31,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:36:31,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:31,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:31,591 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:31,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 22:36:31,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:36:31,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:36:31,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:36:31,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:36:32,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:36:32,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:32,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16595268] [2021-12-06 22:36:32,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16595268] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:32,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:36:32,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-12-06 22:36:32,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979531967] [2021-12-06 22:36:32,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:32,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 22:36:32,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:32,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 22:36:32,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:36:32,602 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:33,568 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-12-06 22:36:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:36:33,576 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 22:36:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:33,576 INFO L225 Difference]: With dead ends: 65 [2021-12-06 22:36:33,576 INFO L226 Difference]: Without dead ends: 45 [2021-12-06 22:36:33,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2021-12-06 22:36:33,578 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 94 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:33,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 69 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:36:33,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-06 22:36:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2021-12-06 22:36:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-12-06 22:36:33,583 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24 [2021-12-06 22:36:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:33,583 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-12-06 22:36:33,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-12-06 22:36:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 22:36:33,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:33,584 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:33,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 22:36:33,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:33,787 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:33,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 3 times [2021-12-06 22:36:33,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:33,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94592067] [2021-12-06 22:36:33,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:36:33,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:33,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:33,793 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:33,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 22:36:34,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 22:36:34,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:36:34,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 22:36:34,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:34,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:34,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:34,274 INFO L354 Elim1Store]: treesize reduction 33, result has 38.9 percent of original size [2021-12-06 22:36:34,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 38 [2021-12-06 22:36:34,293 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 18 [2021-12-06 22:36:34,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 60 [2021-12-06 22:36:34,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 53 [2021-12-06 22:36:34,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:34,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:34,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:34,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 104 [2021-12-06 22:36:34,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:34,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 96 [2021-12-06 22:36:36,131 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-06 22:36:36,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 56 [2021-12-06 22:36:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:36,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:47,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:47,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94592067] [2021-12-06 22:36:47,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94592067] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:47,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:36:47,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-12-06 22:36:47,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992413972] [2021-12-06 22:36:47,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:47,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 22:36:47,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:47,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 22:36:47,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-12-06 22:36:47,019 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:51,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:51,474 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2021-12-06 22:36:51,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 22:36:51,474 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 22:36:51,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:51,475 INFO L225 Difference]: With dead ends: 66 [2021-12-06 22:36:51,475 INFO L226 Difference]: Without dead ends: 64 [2021-12-06 22:36:51,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:36:51,476 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:51,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 101 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 120 Unchecked, 0.9s Time] [2021-12-06 22:36:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-06 22:36:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2021-12-06 22:36:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-12-06 22:36:51,483 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 24 [2021-12-06 22:36:51,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:51,484 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-12-06 22:36:51,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:51,484 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-12-06 22:36:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 22:36:51,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:51,485 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:51,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 22:36:51,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:51,686 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:51,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:51,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1983767408, now seen corresponding path program 4 times [2021-12-06 22:36:51,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:51,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540647641] [2021-12-06 22:36:51,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:36:51,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:51,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:51,691 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:51,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 22:36:51,818 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:36:51,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:36:51,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:36:51,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:52,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:52,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:36:52,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540647641] [2021-12-06 22:36:52,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540647641] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:52,606 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:36:52,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-12-06 22:36:52,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990988536] [2021-12-06 22:36:52,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:52,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 22:36:52,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:36:52,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 22:36:52,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:36:52,608 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:56,079 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2021-12-06 22:36:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 22:36:56,086 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-06 22:36:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:56,086 INFO L225 Difference]: With dead ends: 109 [2021-12-06 22:36:56,086 INFO L226 Difference]: Without dead ends: 97 [2021-12-06 22:36:56,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=516, Invalid=1554, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 22:36:56,088 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 289 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:56,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 97 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 22:36:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-06 22:36:56,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2021-12-06 22:36:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2021-12-06 22:36:56,098 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 26 [2021-12-06 22:36:56,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:56,099 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2021-12-06 22:36:56,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:36:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2021-12-06 22:36:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 22:36:56,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:56,100 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:56,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-06 22:36:56,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:36:56,300 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:56,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:56,300 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 4 times [2021-12-06 22:36:56,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:36:56,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291921826] [2021-12-06 22:36:56,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:36:56,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:36:56,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:36:56,302 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:36:56,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665115c-115c-443b-8e93-5bc368fc62e1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 22:36:56,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:36:56,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:36:56,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 22:36:56,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:56,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,768 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:56,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 65 [2021-12-06 22:36:56,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:56,944 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:56,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 69 [2021-12-06 22:36:57,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:57,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:57,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:57,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:57,180 INFO L354 Elim1Store]: treesize reduction 65, result has 34.3 percent of original size [2021-12-06 22:36:57,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 213 treesize of output 147 [2021-12-06 22:36:57,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:57,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:57,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:57,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:57,638 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-06 22:36:57,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 189 treesize of output 139 [2021-12-06 22:37:05,857 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-12-06 22:37:05,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 261 treesize of output 105 [2021-12-06 22:37:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:37:05,988 INFO L328 TraceCheckSpWp]: Computing backward predicates...