./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Addition03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/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_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Addition03-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:23:28,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:23:28,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:23:28,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:23:28,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:23:28,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:23:28,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:23:28,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:23:28,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:23:28,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:23:28,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:23:28,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:23:28,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:23:28,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:23:28,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:23:28,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:23:28,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:23:28,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:23:28,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:23:28,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:23:28,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:23:28,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:23:28,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:23:28,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:23:28,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:23:28,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:23:28,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:23:28,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:23:28,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:23:28,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:23:28,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:23:28,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:23:28,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:23:28,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:23:28,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:23:28,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:23:28,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:23:28,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:23:28,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:23:28,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:23:28,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:23:28,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-06 19:23:28,818 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:23:28,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:23:28,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:23:28,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:23:28,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:23:28,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:23:28,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:23:28,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:23:28,820 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:23:28,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:23:28,821 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:23:28,821 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:23:28,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:23:28,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:23:28,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:23:28,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:23:28,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:23:28,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:23:28,822 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-06 19:23:28,822 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:23:28,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:23:28,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:23:28,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:23:28,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:23:28,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:23:28,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:23:28,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:23:28,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:23:28,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:23:28,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:23:28,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:23:28,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:23:28,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:23:28,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:23:28,824 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_70a98e8a-d5af-424d-ab60-d0dec1cd771c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b [2021-12-06 19:23:29,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:23:29,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:23:29,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:23:29,026 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:23:29,027 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:23:29,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/recursive/Addition03-1.c [2021-12-06 19:23:29,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/data/3d0c89b19/a7ebeafd5df44e31a64779416092af4d/FLAG1726037a9 [2021-12-06 19:23:29,424 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:23:29,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/sv-benchmarks/c/recursive/Addition03-1.c [2021-12-06 19:23:29,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/data/3d0c89b19/a7ebeafd5df44e31a64779416092af4d/FLAG1726037a9 [2021-12-06 19:23:29,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/data/3d0c89b19/a7ebeafd5df44e31a64779416092af4d [2021-12-06 19:23:29,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:23:29,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:23:29,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:23:29,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:23:29,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:23:29,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b15406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29, skipping insertion in model container [2021-12-06 19:23:29,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:23:29,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:23:29,575 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_70a98e8a-d5af-424d-ab60-d0dec1cd771c/sv-benchmarks/c/recursive/Addition03-1.c[840,853] [2021-12-06 19:23:29,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:23:29,583 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:23:29,596 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_70a98e8a-d5af-424d-ab60-d0dec1cd771c/sv-benchmarks/c/recursive/Addition03-1.c[840,853] [2021-12-06 19:23:29,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:23:29,608 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:23:29,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29 WrapperNode [2021-12-06 19:23:29,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:23:29,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:23:29,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:23:29,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:23:29,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,632 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2021-12-06 19:23:29,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:23:29,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:23:29,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:23:29,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:23:29,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:23:29,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:23:29,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:23:29,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:23:29,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (1/1) ... [2021-12-06 19:23:29,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:23:29,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:29,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:23:29,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:23:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:23:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:23:29,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:23:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:23:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-12-06 19:23:29,703 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-12-06 19:23:29,747 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:23:29,748 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:23:29,830 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:23:29,834 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:23:29,834 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 19:23:29,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:23:29 BoogieIcfgContainer [2021-12-06 19:23:29,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:23:29,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:23:29,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:23:29,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:23:29,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:23:29" (1/3) ... [2021-12-06 19:23:29,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486c5c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:23:29, skipping insertion in model container [2021-12-06 19:23:29,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:29" (2/3) ... [2021-12-06 19:23:29,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486c5c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:23:29, skipping insertion in model container [2021-12-06 19:23:29,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:23:29" (3/3) ... [2021-12-06 19:23:29,842 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2021-12-06 19:23:29,845 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:23:29,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-06 19:23:29,880 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:23:29,885 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=FINITE_AUTOMATA, 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 19:23:29,885 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-06 19:23:29,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 19:23:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 19:23:29,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:29,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:29,901 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1845786995, now seen corresponding path program 1 times [2021-12-06 19:23:29,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:29,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152920342] [2021-12-06 19:23:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:29,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:30,035 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 19:23:30,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:30,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152920342] [2021-12-06 19:23:30,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152920342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:30,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:30,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:23:30,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624588438] [2021-12-06 19:23:30,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:30,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:23:30,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:30,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:23:30,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:23:30,063 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:30,165 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2021-12-06 19:23:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:23:30,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 19:23:30,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:30,179 INFO L225 Difference]: With dead ends: 64 [2021-12-06 19:23:30,180 INFO L226 Difference]: Without dead ends: 45 [2021-12-06 19:23:30,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:23:30,186 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 50 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:30,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 108 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:23:30,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-06 19:23:30,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2021-12-06 19:23:30,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.565217391304348) internal successors, (36), 32 states have internal predecessors, (36), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-12-06 19:23:30,220 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 7 [2021-12-06 19:23:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:30,220 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-12-06 19:23:30,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-12-06 19:23:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 19:23:30,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:30,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:30,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:23:30,222 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:30,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:30,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1384822053, now seen corresponding path program 1 times [2021-12-06 19:23:30,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:30,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916609503] [2021-12-06 19:23:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:30,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:30,260 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 19:23:30,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:30,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916609503] [2021-12-06 19:23:30,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916609503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:30,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:30,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:23:30,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274281342] [2021-12-06 19:23:30,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:30,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:23:30,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:23:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:23:30,263 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:30,302 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2021-12-06 19:23:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:23:30,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 19:23:30,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:30,304 INFO L225 Difference]: With dead ends: 67 [2021-12-06 19:23:30,304 INFO L226 Difference]: Without dead ends: 65 [2021-12-06 19:23:30,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:23:30,306 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:30,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 72 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-06 19:23:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2021-12-06 19:23:30,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.475) internal successors, (59), 48 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2021-12-06 19:23:30,314 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 8 [2021-12-06 19:23:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:30,315 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2021-12-06 19:23:30,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,315 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2021-12-06 19:23:30,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 19:23:30,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:30,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:30,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:23:30,316 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:30,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:30,317 INFO L85 PathProgramCache]: Analyzing trace with hash -20189259, now seen corresponding path program 1 times [2021-12-06 19:23:30,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:30,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817151385] [2021-12-06 19:23:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:30,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:30,351 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 19:23:30,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:30,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817151385] [2021-12-06 19:23:30,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817151385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:30,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:30,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:23:30,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351798956] [2021-12-06 19:23:30,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:30,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:23:30,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:30,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:23:30,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:23:30,354 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:30,401 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2021-12-06 19:23:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:23:30,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 19:23:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:30,403 INFO L225 Difference]: With dead ends: 64 [2021-12-06 19:23:30,403 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 19:23:30,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:23:30,406 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 37 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:30,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 49 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:30,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 19:23:30,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2021-12-06 19:23:30,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.4) internal successors, (56), 47 states have internal predecessors, (56), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2021-12-06 19:23:30,417 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 9 [2021-12-06 19:23:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:30,417 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2021-12-06 19:23:30,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2021-12-06 19:23:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:23:30,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:30,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:30,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:23:30,419 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash -625866969, now seen corresponding path program 1 times [2021-12-06 19:23:30,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:30,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627658831] [2021-12-06 19:23:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:30,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:30,448 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 19:23:30,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:30,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627658831] [2021-12-06 19:23:30,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627658831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:30,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:30,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:23:30,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137392170] [2021-12-06 19:23:30,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:30,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:23:30,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:30,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:23:30,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:23:30,450 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:30,462 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2021-12-06 19:23:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:23:30,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 19:23:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:30,463 INFO L225 Difference]: With dead ends: 52 [2021-12-06 19:23:30,463 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 19:23:30,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:23:30,464 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:30,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:30,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 19:23:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-06 19:23:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.35) internal successors, (54), 46 states have internal predecessors, (54), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2021-12-06 19:23:30,471 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 10 [2021-12-06 19:23:30,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:30,471 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2021-12-06 19:23:30,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2021-12-06 19:23:30,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 19:23:30,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:30,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:30,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:23:30,472 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1895634472, now seen corresponding path program 1 times [2021-12-06 19:23:30,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:30,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010523850] [2021-12-06 19:23:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:30,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:30,505 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 19:23:30,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:30,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010523850] [2021-12-06 19:23:30,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010523850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:30,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:30,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:23:30,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953604759] [2021-12-06 19:23:30,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:30,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:23:30,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:23:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:23:30,507 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 5 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:30,545 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-12-06 19:23:30,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:23:30,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 19:23:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:30,546 INFO L225 Difference]: With dead ends: 63 [2021-12-06 19:23:30,546 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 19:23:30,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:23:30,548 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:30,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 49 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 19:23:30,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2021-12-06 19:23:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.325) internal successors, (53), 46 states have internal predecessors, (53), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-12-06 19:23:30,557 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 11 [2021-12-06 19:23:30,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:30,558 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-12-06 19:23:30,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-12-06 19:23:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 19:23:30,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:30,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:30,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:23:30,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:30,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:30,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1032977456, now seen corresponding path program 1 times [2021-12-06 19:23:30,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:30,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182842063] [2021-12-06 19:23:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:30,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:30,610 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 19:23:30,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:30,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182842063] [2021-12-06 19:23:30,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182842063] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:30,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233943790] [2021-12-06 19:23:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:30,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:30,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:30,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:30,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:23:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:30,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:23:30,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:30,694 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 19:23:30,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:30,752 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 19:23:30,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233943790] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:30,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:30,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-06 19:23:30,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360527124] [2021-12-06 19:23:30,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:30,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:23:30,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:30,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:23:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:23:30,755 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:30,864 INFO L93 Difference]: Finished difference Result 162 states and 188 transitions. [2021-12-06 19:23:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:23:30,865 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 19:23:30,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:30,866 INFO L225 Difference]: With dead ends: 162 [2021-12-06 19:23:30,866 INFO L226 Difference]: Without dead ends: 160 [2021-12-06 19:23:30,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:23:30,868 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 216 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:30,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 125 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:23:30,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-06 19:23:30,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 120. [2021-12-06 19:23:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 101 states have (on average 1.297029702970297) internal successors, (131), 108 states have internal predecessors, (131), 13 states have call successors, (13), 11 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2021-12-06 19:23:30,885 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 15 [2021-12-06 19:23:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:30,886 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2021-12-06 19:23:30,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:30,886 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2021-12-06 19:23:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 19:23:30,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:30,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:30,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:23:31,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:31,088 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:31,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:31,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2082106057, now seen corresponding path program 1 times [2021-12-06 19:23:31,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:31,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801579847] [2021-12-06 19:23:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:31,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:31,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:31,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801579847] [2021-12-06 19:23:31,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801579847] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:31,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794691690] [2021-12-06 19:23:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:31,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:31,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:31,170 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:31,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:23:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:31,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:23:31,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:31,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:23:31,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794691690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:31,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:23:31,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2021-12-06 19:23:31,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001300847] [2021-12-06 19:23:31,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:31,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:23:31,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:31,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:23:31,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:23:31,232 INFO L87 Difference]: Start difference. First operand 120 states and 144 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:31,263 INFO L93 Difference]: Finished difference Result 165 states and 196 transitions. [2021-12-06 19:23:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:23:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 19:23:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:31,265 INFO L225 Difference]: With dead ends: 165 [2021-12-06 19:23:31,265 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 19:23:31,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:23:31,267 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:31,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 51 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:31,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 19:23:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2021-12-06 19:23:31,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 70 states have internal predecessors, (80), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2021-12-06 19:23:31,277 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 17 [2021-12-06 19:23:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:31,278 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2021-12-06 19:23:31,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:31,278 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2021-12-06 19:23:31,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 19:23:31,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:31,279 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:31,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:23:31,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:31,481 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:31,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:31,483 INFO L85 PathProgramCache]: Analyzing trace with hash -120438652, now seen corresponding path program 1 times [2021-12-06 19:23:31,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:31,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810902865] [2021-12-06 19:23:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:31,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:31,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:31,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810902865] [2021-12-06 19:23:31,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810902865] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:31,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541438433] [2021-12-06 19:23:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:31,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:31,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:31,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:31,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:23:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:31,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:23:31,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:31,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:31,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541438433] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:31,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:31,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-06 19:23:31,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664927277] [2021-12-06 19:23:31,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:31,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:23:31,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:31,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:23:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:23:31,664 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand has 12 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:31,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:31,735 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2021-12-06 19:23:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:23:31,735 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 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 19:23:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:31,737 INFO L225 Difference]: With dead ends: 178 [2021-12-06 19:23:31,737 INFO L226 Difference]: Without dead ends: 177 [2021-12-06 19:23:31,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:23:31,738 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 126 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:31,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 96 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:31,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-06 19:23:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 160. [2021-12-06 19:23:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 139 states have (on average 1.158273381294964) internal successors, (161), 142 states have internal predecessors, (161), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 178 transitions. [2021-12-06 19:23:31,753 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 178 transitions. Word has length 18 [2021-12-06 19:23:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:31,753 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 178 transitions. [2021-12-06 19:23:31,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 178 transitions. [2021-12-06 19:23:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 19:23:31,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:31,754 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:31,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:23:31,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 19:23:31,956 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:31,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash 40289813, now seen corresponding path program 1 times [2021-12-06 19:23:31,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:31,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617584527] [2021-12-06 19:23:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:31,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:32,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:32,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:32,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617584527] [2021-12-06 19:23:32,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617584527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:32,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:32,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:23:32,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031646952] [2021-12-06 19:23:32,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:32,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:23:32,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:32,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:23:32,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:23:32,014 INFO L87 Difference]: Start difference. First operand 160 states and 178 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:32,036 INFO L93 Difference]: Finished difference Result 161 states and 178 transitions. [2021-12-06 19:23:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:23:32,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 19:23:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:32,037 INFO L225 Difference]: With dead ends: 161 [2021-12-06 19:23:32,037 INFO L226 Difference]: Without dead ends: 80 [2021-12-06 19:23:32,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 19:23:32,038 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:32,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 42 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-06 19:23:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-12-06 19:23:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 70 states have internal predecessors, (72), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2021-12-06 19:23:32,042 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 19 [2021-12-06 19:23:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:32,042 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2021-12-06 19:23:32,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2021-12-06 19:23:32,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 19:23:32,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:32,044 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2021-12-06 19:23:32,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:23:32,044 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:32,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:32,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1543096729, now seen corresponding path program 2 times [2021-12-06 19:23:32,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:32,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385133950] [2021-12-06 19:23:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:32,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:32,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:32,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385133950] [2021-12-06 19:23:32,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385133950] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:32,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072012539] [2021-12-06 19:23:32,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:23:32,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:32,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:32,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:32,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:23:32,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:23:32,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:32,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 19:23:32,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:32,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:32,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072012539] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:32,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:32,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-06 19:23:32,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185248652] [2021-12-06 19:23:32,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:32,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 19:23:32,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:32,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 19:23:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-12-06 19:23:32,354 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 24 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 14 states have internal predecessors, (67), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:32,481 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2021-12-06 19:23:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:23:32,482 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 14 states have internal predecessors, (67), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-06 19:23:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:32,483 INFO L225 Difference]: With dead ends: 133 [2021-12-06 19:23:32,483 INFO L226 Difference]: Without dead ends: 132 [2021-12-06 19:23:32,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 19:23:32,484 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 280 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:32,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 130 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-06 19:23:32,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2021-12-06 19:23:32,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 111 states have (on average 1.027027027027027) internal successors, (114), 112 states have internal predecessors, (114), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:32,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2021-12-06 19:23:32,492 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 39 [2021-12-06 19:23:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:32,492 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2021-12-06 19:23:32,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 14 states have internal predecessors, (67), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2021-12-06 19:23:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 19:23:32,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:32,494 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-12-06 19:23:32,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:23:32,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 19:23:32,695 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1653811754, now seen corresponding path program 2 times [2021-12-06 19:23:32,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:32,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834423028] [2021-12-06 19:23:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:32,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:32,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:32,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834423028] [2021-12-06 19:23:32,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834423028] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:32,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771505164] [2021-12-06 19:23:32,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:23:32,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:32,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:32,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:32,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:23:32,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:23:32,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:32,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 19:23:32,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:32,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:33,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771505164] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:33,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:33,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-06 19:23:33,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431539817] [2021-12-06 19:23:33,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:33,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 19:23:33,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:33,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 19:23:33,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-12-06 19:23:33,044 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 24 states, 21 states have (on average 3.761904761904762) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:33,178 INFO L93 Difference]: Finished difference Result 186 states and 192 transitions. [2021-12-06 19:23:33,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:23:33,179 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.761904761904762) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-06 19:23:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:33,180 INFO L225 Difference]: With dead ends: 186 [2021-12-06 19:23:33,180 INFO L226 Difference]: Without dead ends: 185 [2021-12-06 19:23:33,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 19:23:33,181 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 261 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:33,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 151 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-06 19:23:33,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2021-12-06 19:23:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 159 states have (on average 1.0188679245283019) internal successors, (162), 160 states have internal predecessors, (162), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2021-12-06 19:23:33,189 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 45 [2021-12-06 19:23:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:33,189 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2021-12-06 19:23:33,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.761904761904762) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:33,189 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2021-12-06 19:23:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 19:23:33,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:33,192 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2021-12-06 19:23:33,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:23:33,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:33,392 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:33,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:33,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2009773099, now seen corresponding path program 3 times [2021-12-06 19:23:33,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:33,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088265949] [2021-12-06 19:23:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:33,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:33,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088265949] [2021-12-06 19:23:33,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088265949] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584104087] [2021-12-06 19:23:33,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:23:33,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:33,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:33,613 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:33,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:23:33,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-06 19:23:33,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:33,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 19:23:33,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:33,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:34,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584104087] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:34,134 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:34,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-06 19:23:34,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672175135] [2021-12-06 19:23:34,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:34,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-06 19:23:34,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:34,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-06 19:23:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 19:23:34,138 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand has 48 states, 45 states have (on average 3.3555555555555556) internal successors, (151), 26 states have internal predecessors, (151), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:34,490 INFO L93 Difference]: Finished difference Result 283 states and 295 transitions. [2021-12-06 19:23:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 19:23:34,491 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 3.3555555555555556) internal successors, (151), 26 states have internal predecessors, (151), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-12-06 19:23:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:34,492 INFO L225 Difference]: With dead ends: 283 [2021-12-06 19:23:34,492 INFO L226 Difference]: Without dead ends: 282 [2021-12-06 19:23:34,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1337, Invalid=3493, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 19:23:34,494 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 665 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:34,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 215 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:23:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-06 19:23:34,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 278. [2021-12-06 19:23:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 243 states have (on average 1.0123456790123457) internal successors, (246), 244 states have internal predecessors, (246), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:34,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 279 transitions. [2021-12-06 19:23:34,503 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 279 transitions. Word has length 87 [2021-12-06 19:23:34,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:34,504 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 279 transitions. [2021-12-06 19:23:34,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 3.3555555555555556) internal successors, (151), 26 states have internal predecessors, (151), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 279 transitions. [2021-12-06 19:23:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 19:23:34,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:34,506 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-12-06 19:23:34,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:23:34,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 19:23:34,708 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:34,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:34,709 INFO L85 PathProgramCache]: Analyzing trace with hash -192044778, now seen corresponding path program 3 times [2021-12-06 19:23:34,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:34,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199939641] [2021-12-06 19:23:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:34,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:34,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:34,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199939641] [2021-12-06 19:23:34,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199939641] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:34,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871621906] [2021-12-06 19:23:34,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:23:34,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:34,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:34,934 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:34,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:23:34,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-06 19:23:34,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:34,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 19:23:34,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:35,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:35,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871621906] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:35,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:35,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-06 19:23:35,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993224216] [2021-12-06 19:23:35,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:35,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-06 19:23:35,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:35,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-06 19:23:35,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 19:23:35,438 INFO L87 Difference]: Start difference. First operand 278 states and 279 transitions. Second operand has 48 states, 45 states have (on average 3.888888888888889) internal successors, (175), 26 states have internal predecessors, (175), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:35,748 INFO L93 Difference]: Finished difference Result 390 states and 402 transitions. [2021-12-06 19:23:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 19:23:35,749 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 3.888888888888889) internal successors, (175), 26 states have internal predecessors, (175), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-06 19:23:35,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:35,750 INFO L225 Difference]: With dead ends: 390 [2021-12-06 19:23:35,750 INFO L226 Difference]: Without dead ends: 389 [2021-12-06 19:23:35,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1337, Invalid=3493, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 19:23:35,752 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 664 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:35,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 277 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:23:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-12-06 19:23:35,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 386. [2021-12-06 19:23:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 339 states have (on average 1.008849557522124) internal successors, (342), 340 states have internal predecessors, (342), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 387 transitions. [2021-12-06 19:23:35,765 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 387 transitions. Word has length 99 [2021-12-06 19:23:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:35,765 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 387 transitions. [2021-12-06 19:23:35,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 3.888888888888889) internal successors, (175), 26 states have internal predecessors, (175), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:35,765 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 387 transitions. [2021-12-06 19:23:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 19:23:35,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:35,767 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1] [2021-12-06 19:23:35,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:23:35,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:35,969 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:35,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:35,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1051592015, now seen corresponding path program 4 times [2021-12-06 19:23:35,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:35,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186025137] [2021-12-06 19:23:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:35,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:36,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:36,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186025137] [2021-12-06 19:23:36,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186025137] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:36,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248555613] [2021-12-06 19:23:36,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:23:36,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:36,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:36,491 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:36,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:23:36,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:23:36,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:36,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 19:23:36,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:36,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:37,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248555613] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:37,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:37,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-06 19:23:37,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154275343] [2021-12-06 19:23:37,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:37,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-06 19:23:37,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:37,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-06 19:23:37,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2021-12-06 19:23:37,825 INFO L87 Difference]: Start difference. First operand 386 states and 387 transitions. Second operand has 96 states, 93 states have (on average 3.4301075268817205) internal successors, (319), 50 states have internal predecessors, (319), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:38,863 INFO L93 Difference]: Finished difference Result 583 states and 607 transitions. [2021-12-06 19:23:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-06 19:23:38,863 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 3.4301075268817205) internal successors, (319), 50 states have internal predecessors, (319), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2021-12-06 19:23:38,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:38,866 INFO L225 Difference]: With dead ends: 583 [2021-12-06 19:23:38,866 INFO L226 Difference]: Without dead ends: 582 [2021-12-06 19:23:38,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5549, Invalid=14473, Unknown=0, NotChecked=0, Total=20022 [2021-12-06 19:23:38,871 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1594 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:38,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 407 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:23:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-12-06 19:23:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 578. [2021-12-06 19:23:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 507 states have (on average 1.0059171597633136) internal successors, (510), 508 states have internal predecessors, (510), 69 states have call successors, (69), 69 states have call predecessors, (69), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 579 transitions. [2021-12-06 19:23:38,888 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 579 transitions. Word has length 183 [2021-12-06 19:23:38,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:38,889 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 579 transitions. [2021-12-06 19:23:38,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 3.4301075268817205) internal successors, (319), 50 states have internal predecessors, (319), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 579 transitions. [2021-12-06 19:23:38,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-06 19:23:38,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:38,891 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-12-06 19:23:38,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 19:23:39,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:39,093 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:39,094 INFO L85 PathProgramCache]: Analyzing trace with hash 82864022, now seen corresponding path program 4 times [2021-12-06 19:23:39,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:39,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020703445] [2021-12-06 19:23:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:39,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:39,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:39,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020703445] [2021-12-06 19:23:39,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020703445] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:39,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932241422] [2021-12-06 19:23:39,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:23:39,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:39,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:39,673 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:39,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:23:39,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:23:39,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:39,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 19:23:39,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:39,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:41,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932241422] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:41,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:41,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-06 19:23:41,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916516640] [2021-12-06 19:23:41,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:41,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-06 19:23:41,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-06 19:23:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2021-12-06 19:23:41,130 INFO L87 Difference]: Start difference. First operand 578 states and 579 transitions. Second operand has 96 states, 93 states have (on average 3.946236559139785) internal successors, (367), 50 states have internal predecessors, (367), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:42,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:42,293 INFO L93 Difference]: Finished difference Result 798 states and 822 transitions. [2021-12-06 19:23:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-06 19:23:42,294 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 3.946236559139785) internal successors, (367), 50 states have internal predecessors, (367), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2021-12-06 19:23:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:42,297 INFO L225 Difference]: With dead ends: 798 [2021-12-06 19:23:42,297 INFO L226 Difference]: Without dead ends: 797 [2021-12-06 19:23:42,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5549, Invalid=14473, Unknown=0, NotChecked=0, Total=20022 [2021-12-06 19:23:42,302 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1357 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:42,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 521 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:23:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-12-06 19:23:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 794. [2021-12-06 19:23:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 699 states have (on average 1.0042918454935623) internal successors, (702), 700 states have internal predecessors, (702), 93 states have call successors, (93), 93 states have call predecessors, (93), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 795 transitions. [2021-12-06 19:23:42,326 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 795 transitions. Word has length 207 [2021-12-06 19:23:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:42,326 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 795 transitions. [2021-12-06 19:23:42,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 3.946236559139785) internal successors, (367), 50 states have internal predecessors, (367), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 795 transitions. [2021-12-06 19:23:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-12-06 19:23:42,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:42,331 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1] [2021-12-06 19:23:42,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 19:23:42,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:42,532 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:42,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:42,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1806002281, now seen corresponding path program 5 times [2021-12-06 19:23:42,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:42,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897003988] [2021-12-06 19:23:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:42,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:44,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:44,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897003988] [2021-12-06 19:23:44,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897003988] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:44,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362760485] [2021-12-06 19:23:44,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:23:44,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:44,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:44,135 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:44,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 19:23:44,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-06 19:23:44,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:44,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-06 19:23:44,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:44,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:23:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:48,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362760485] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:23:48,486 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:23:48,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-06 19:23:48,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773362475] [2021-12-06 19:23:48,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:23:48,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-06 19:23:48,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-06 19:23:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2021-12-06 19:23:48,495 INFO L87 Difference]: Start difference. First operand 794 states and 795 transitions. Second operand has 192 states, 189 states have (on average 3.4656084656084656) internal successors, (655), 98 states have internal predecessors, (655), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:53,299 INFO L93 Difference]: Finished difference Result 1183 states and 1231 transitions. [2021-12-06 19:23:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-06 19:23:53,299 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 189 states have (on average 3.4656084656084656) internal successors, (655), 98 states have internal predecessors, (655), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 375 [2021-12-06 19:23:53,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:53,304 INFO L225 Difference]: With dead ends: 1183 [2021-12-06 19:23:53,304 INFO L226 Difference]: Without dead ends: 1182 [2021-12-06 19:23:53,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17484 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=22613, Invalid=58897, Unknown=0, NotChecked=0, Total=81510 [2021-12-06 19:23:53,309 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 3094 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3094 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:53,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3094 Valid, 797 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:23:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2021-12-06 19:23:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1178. [2021-12-06 19:23:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1035 states have (on average 1.0028985507246377) internal successors, (1038), 1036 states have internal predecessors, (1038), 141 states have call successors, (141), 141 states have call predecessors, (141), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1179 transitions. [2021-12-06 19:23:53,342 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1179 transitions. Word has length 375 [2021-12-06 19:23:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:53,343 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1179 transitions. [2021-12-06 19:23:53,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 189 states have (on average 3.4656084656084656) internal successors, (655), 98 states have internal predecessors, (655), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:53,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1179 transitions. [2021-12-06 19:23:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-12-06 19:23:53,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:53,349 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-12-06 19:23:53,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 19:23:53,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 19:23:53,552 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:23:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:53,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1533719702, now seen corresponding path program 5 times [2021-12-06 19:23:53,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:53,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059659849] [2021-12-06 19:23:53,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:53,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:55,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:55,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059659849] [2021-12-06 19:23:55,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059659849] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:23:55,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605777844] [2021-12-06 19:23:55,273 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:23:55,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:23:55,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:55,274 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:23:55,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 19:23:55,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-06 19:23:55,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:23:55,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-06 19:23:55,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:55,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:24:00,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605777844] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:00,266 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:00,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-06 19:24:00,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775194981] [2021-12-06 19:24:00,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:00,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-06 19:24:00,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:00,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-06 19:24:00,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2021-12-06 19:24:00,271 INFO L87 Difference]: Start difference. First operand 1178 states and 1179 transitions. Second operand has 192 states, 189 states have (on average 3.9735449735449735) internal successors, (751), 98 states have internal predecessors, (751), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:24:05,662 INFO L93 Difference]: Finished difference Result 1614 states and 1662 transitions. [2021-12-06 19:24:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-06 19:24:05,662 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 189 states have (on average 3.9735449735449735) internal successors, (751), 98 states have internal predecessors, (751), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 423 [2021-12-06 19:24:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:24:05,669 INFO L225 Difference]: With dead ends: 1614 [2021-12-06 19:24:05,669 INFO L226 Difference]: Without dead ends: 1613 [2021-12-06 19:24:05,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17484 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=22613, Invalid=58897, Unknown=0, NotChecked=0, Total=81510 [2021-12-06 19:24:05,673 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 3651 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3651 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:24:05,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3651 Valid, 1015 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:24:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-12-06 19:24:05,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1610. [2021-12-06 19:24:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1419 states have (on average 1.0021141649048626) internal successors, (1422), 1420 states have internal predecessors, (1422), 189 states have call successors, (189), 189 states have call predecessors, (189), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1611 transitions. [2021-12-06 19:24:05,734 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1611 transitions. Word has length 423 [2021-12-06 19:24:05,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:24:05,735 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 1611 transitions. [2021-12-06 19:24:05,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 189 states have (on average 3.9735449735449735) internal successors, (751), 98 states have internal predecessors, (751), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1611 transitions. [2021-12-06 19:24:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2021-12-06 19:24:05,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:24:05,744 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 94, 94, 94, 1, 1, 1, 1] [2021-12-06 19:24:05,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 19:24:05,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 19:24:05,945 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:24:05,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:05,945 INFO L85 PathProgramCache]: Analyzing trace with hash -910916647, now seen corresponding path program 6 times [2021-12-06 19:24:05,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:05,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762529450] [2021-12-06 19:24:05,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:05,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 0 proven. 35344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:24:12,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:12,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762529450] [2021-12-06 19:24:12,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762529450] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:24:12,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323886062] [2021-12-06 19:24:12,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:24:12,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:24:12,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:24:12,028 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:24:12,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 19:24:12,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-06 19:24:12,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:24:12,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-06 19:24:12,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:24:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 0 proven. 35344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:24:13,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:24:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 0 proven. 35344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:24:28,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323886062] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:24:28,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:24:28,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-12-06 19:24:28,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316704287] [2021-12-06 19:24:28,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:24:28,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-12-06 19:24:28,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-12-06 19:24:28,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36676, Invalid=110396, Unknown=0, NotChecked=0, Total=147072 [2021-12-06 19:24:28,035 INFO L87 Difference]: Start difference. First operand 1610 states and 1611 transitions. Second operand has 384 states, 381 states have (on average 3.4829396325459316) internal successors, (1327), 194 states have internal predecessors, (1327), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:01,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:25:01,712 INFO L93 Difference]: Finished difference Result 2383 states and 2479 transitions. [2021-12-06 19:25:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-12-06 19:25:01,713 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 381 states have (on average 3.4829396325459316) internal successors, (1327), 194 states have internal predecessors, (1327), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 759 [2021-12-06 19:25:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:25:01,722 INFO L225 Difference]: With dead ends: 2383 [2021-12-06 19:25:01,722 INFO L226 Difference]: Without dead ends: 2382 [2021-12-06 19:25:01,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1898 GetRequests, 1326 SyntacticMatches, 0 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71820 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=91301, Invalid=237601, Unknown=0, NotChecked=0, Total=328902 [2021-12-06 19:25:01,737 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 6314 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:25:01,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6314 Valid, 1571 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:25:01,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2021-12-06 19:25:01,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2378. [2021-12-06 19:25:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2091 states have (on average 1.0014347202295553) internal successors, (2094), 2092 states have internal predecessors, (2094), 285 states have call successors, (285), 285 states have call predecessors, (285), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 2379 transitions. [2021-12-06 19:25:01,801 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 2379 transitions. Word has length 759 [2021-12-06 19:25:01,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:25:01,801 INFO L470 AbstractCegarLoop]: Abstraction has 2378 states and 2379 transitions. [2021-12-06 19:25:01,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 381 states have (on average 3.4829396325459316) internal successors, (1327), 194 states have internal predecessors, (1327), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 2379 transitions. [2021-12-06 19:25:01,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2021-12-06 19:25:01,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:25:01,809 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 95, 94, 94, 94, 94, 1, 1, 1, 1] [2021-12-06 19:25:01,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 19:25:02,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 19:25:02,010 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:25:02,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:25:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash -793620842, now seen corresponding path program 6 times [2021-12-06 19:25:02,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:25:02,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862745110] [2021-12-06 19:25:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:25:02,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:25:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 39903 backedges. 0 proven. 39903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:25:08,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:25:08,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862745110] [2021-12-06 19:25:08,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862745110] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:25:08,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512670278] [2021-12-06 19:25:08,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:25:08,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:25:08,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:25:08,217 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:25:08,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 19:25:08,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-06 19:25:08,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:25:08,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-06 19:25:08,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:25:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 39903 backedges. 0 proven. 39903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:25:09,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:25:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 39903 backedges. 0 proven. 39903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:25:25,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512670278] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:25:25,045 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:25:25,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-12-06 19:25:25,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503259815] [2021-12-06 19:25:25,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:25:25,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-12-06 19:25:25,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:25:25,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-12-06 19:25:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36676, Invalid=110396, Unknown=0, NotChecked=0, Total=147072 [2021-12-06 19:25:25,059 INFO L87 Difference]: Start difference. First operand 2378 states and 2379 transitions. Second operand has 384 states, 381 states have (on average 3.9868766404199474) internal successors, (1519), 194 states have internal predecessors, (1519), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:26:02,964 INFO L93 Difference]: Finished difference Result 3246 states and 3342 transitions. [2021-12-06 19:26:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-12-06 19:26:02,965 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 381 states have (on average 3.9868766404199474) internal successors, (1519), 194 states have internal predecessors, (1519), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 855 [2021-12-06 19:26:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:26:02,976 INFO L225 Difference]: With dead ends: 3246 [2021-12-06 19:26:02,977 INFO L226 Difference]: Without dead ends: 3245 [2021-12-06 19:26:02,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2090 GetRequests, 1518 SyntacticMatches, 0 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71820 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=91301, Invalid=237601, Unknown=0, NotChecked=0, Total=328902 [2021-12-06 19:26:02,991 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 7116 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7116 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:26:02,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7116 Valid, 1972 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 19:26:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2021-12-06 19:26:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3242. [2021-12-06 19:26:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3242 states, 2859 states have (on average 1.0010493179433368) internal successors, (2862), 2860 states have internal predecessors, (2862), 381 states have call successors, (381), 381 states have call predecessors, (381), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 3243 transitions. [2021-12-06 19:26:03,077 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 3243 transitions. Word has length 855 [2021-12-06 19:26:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:26:03,078 INFO L470 AbstractCegarLoop]: Abstraction has 3242 states and 3243 transitions. [2021-12-06 19:26:03,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 381 states have (on average 3.9868766404199474) internal successors, (1519), 194 states have internal predecessors, (1519), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 3243 transitions. [2021-12-06 19:26:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1528 [2021-12-06 19:26:03,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:26:03,095 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 190, 190, 190, 190, 190, 1, 1, 1, 1] [2021-12-06 19:26:03,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 19:26:03,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:03,296 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:26:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash -210519367, now seen corresponding path program 7 times [2021-12-06 19:26:03,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:03,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759325648] [2021-12-06 19:26:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:03,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 144400 backedges. 0 proven. 144400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:26:25,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759325648] [2021-12-06 19:26:25,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759325648] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:26:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379398914] [2021-12-06 19:26:25,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:26:25,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:26:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:26:25,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:26:25,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 19:26:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:25,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 3082 conjuncts, 384 conjunts are in the unsatisfiable core [2021-12-06 19:26:26,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:26:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 144400 backedges. 0 proven. 144400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:26:27,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:27:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 144400 backedges. 0 proven. 144400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:27:24,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379398914] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:27:24,558 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:27:24,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2021-12-06 19:27:24,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702456175] [2021-12-06 19:27:24,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:27:24,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2021-12-06 19:27:24,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:27:24,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2021-12-06 19:27:24,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147076, Invalid=441980, Unknown=0, NotChecked=0, Total=589056 [2021-12-06 19:27:24,604 INFO L87 Difference]: Start difference. First operand 3242 states and 3243 transitions. Second operand has 768 states, 765 states have (on average 3.4915032679738562) internal successors, (2671), 386 states have internal predecessors, (2671), 382 states have call successors, (382), 382 states have call predecessors, (382), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:33:36,405 INFO L93 Difference]: Finished difference Result 4783 states and 4975 transitions. [2021-12-06 19:33:36,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2021-12-06 19:33:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 765 states have (on average 3.4915032679738562) internal successors, (2671), 386 states have internal predecessors, (2671), 382 states have call successors, (382), 382 states have call predecessors, (382), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1527 [2021-12-06 19:33:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:33:36,423 INFO L225 Difference]: With dead ends: 4783 [2021-12-06 19:33:36,423 INFO L226 Difference]: Without dead ends: 4782 [2021-12-06 19:33:36,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3818 GetRequests, 2670 SyntacticMatches, 0 SemanticMatches, 1148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291084 ImplicationChecksByTransitivity, 118.5s TimeCoverageRelationStatistics Valid=366917, Invalid=954433, Unknown=0, NotChecked=0, Total=1321350 [2021-12-06 19:33:36,509 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 14985 mSDsluCounter, 3116 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14985 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:33:36,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14985 Valid, 3130 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 19:33:36,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4782 states. [2021-12-06 19:33:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4782 to 4778. [2021-12-06 19:33:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4203 states have (on average 1.0007137758743754) internal successors, (4206), 4204 states have internal predecessors, (4206), 573 states have call successors, (573), 573 states have call predecessors, (573), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 4779 transitions. [2021-12-06 19:33:36,661 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 4779 transitions. Word has length 1527 [2021-12-06 19:33:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:33:36,662 INFO L470 AbstractCegarLoop]: Abstraction has 4778 states and 4779 transitions. [2021-12-06 19:33:36,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 765 states have (on average 3.4915032679738562) internal successors, (2671), 386 states have internal predecessors, (2671), 382 states have call successors, (382), 382 states have call predecessors, (382), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 4779 transitions. [2021-12-06 19:33:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1720 [2021-12-06 19:33:36,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:33:36,683 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 191, 190, 190, 190, 190, 1, 1, 1, 1] [2021-12-06 19:33:36,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 19:33:36,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:33:36,884 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-06 19:33:36,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:36,887 INFO L85 PathProgramCache]: Analyzing trace with hash -393379178, now seen corresponding path program 7 times [2021-12-06 19:33:36,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:36,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847993397] [2021-12-06 19:33:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:36,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 162735 backedges. 0 proven. 162735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:00,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:34:00,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847993397] [2021-12-06 19:34:00,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847993397] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:34:00,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070009734] [2021-12-06 19:34:00,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:34:00,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:34:00,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:34:00,900 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:34:00,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70a98e8a-d5af-424d-ab60-d0dec1cd771c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 19:34:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:34:01,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 3274 conjuncts, 384 conjunts are in the unsatisfiable core [2021-12-06 19:34:01,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:34:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 162735 backedges. 0 proven. 162735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:34:02,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:35:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 162735 backedges. 0 proven. 162735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:35:06,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070009734] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:35:06,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:35:06,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2021-12-06 19:35:06,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200681501] [2021-12-06 19:35:06,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:35:06,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2021-12-06 19:35:06,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:35:06,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2021-12-06 19:35:06,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147076, Invalid=441980, Unknown=0, NotChecked=0, Total=589056 [2021-12-06 19:35:06,136 INFO L87 Difference]: Start difference. First operand 4778 states and 4779 transitions. Second operand has 768 states, 765 states have (on average 3.9934640522875817) internal successors, (3055), 386 states have internal predecessors, (3055), 382 states have call successors, (382), 382 states have call predecessors, (382), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)