./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi03-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi03-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF --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 6256a35b65d93a8e45ad38c9510c3be689a890aeee58265a5723be13a7385a72 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:51:05,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:51:05,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:51:05,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:51:05,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:51:05,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:51:05,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:51:05,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:51:05,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:51:05,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:51:05,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:51:05,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:51:05,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:51:05,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:51:05,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:51:05,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:51:05,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:51:05,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:51:05,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:51:05,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:51:05,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:51:05,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:51:05,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:51:05,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:51:05,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:51:05,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:51:05,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:51:05,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:51:05,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:51:05,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:51:05,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:51:05,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:51:05,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:51:05,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:51:05,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:51:05,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:51:05,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:51:05,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:51:05,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:51:05,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:51:05,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:51:05,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-20 05:51:05,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:51:05,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:51:05,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:51:05,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:51:05,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:51:05,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:51:05,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:51:05,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:51:05,921 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:51:05,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:51:05,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:51:05,922 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:51:05,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:51:05,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:51:05,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:51:05,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:51:05,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:51:05,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:51:05,924 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 05:51:05,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:51:05,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:51:05,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:51:05,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:51:05,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:51:05,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:51:05,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:51:05,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:05,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:51:05,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:51:05,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:51:05,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:51:05,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:51:05,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:51:05,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:51:05,930 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_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6256a35b65d93a8e45ad38c9510c3be689a890aeee58265a5723be13a7385a72 [2021-11-20 05:51:06,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:51:06,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:51:06,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:51:06,196 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:51:06,196 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:51:06,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/recursive/recHanoi03-2.c [2021-11-20 05:51:06,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/data/10250751a/aba19a029e294efd87107c13e486e29e/FLAG93d7b67a7 [2021-11-20 05:51:06,755 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:51:06,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/sv-benchmarks/c/recursive/recHanoi03-2.c [2021-11-20 05:51:06,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/data/10250751a/aba19a029e294efd87107c13e486e29e/FLAG93d7b67a7 [2021-11-20 05:51:07,150 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/data/10250751a/aba19a029e294efd87107c13e486e29e [2021-11-20 05:51:07,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:51:07,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:51:07,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:07,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:51:07,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:51:07,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed770dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07, skipping insertion in model container [2021-11-20 05:51:07,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:51:07,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:07,362 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_07f50ccc-f139-4353-ac7b-cb72848ac9f8/sv-benchmarks/c/recursive/recHanoi03-2.c[769,782] [2021-11-20 05:51:07,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:07,369 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:51:07,381 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_07f50ccc-f139-4353-ac7b-cb72848ac9f8/sv-benchmarks/c/recursive/recHanoi03-2.c[769,782] [2021-11-20 05:51:07,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:07,393 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:51:07,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07 WrapperNode [2021-11-20 05:51:07,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:07,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:51:07,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:51:07,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:51:07,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,418 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2021-11-20 05:51:07,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:51:07,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:51:07,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:51:07,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:51:07,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:51:07,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:51:07,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:51:07,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:51:07,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (1/1) ... [2021-11-20 05:51:07,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:07,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:07,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:51:07,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:51:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:51:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2021-11-20 05:51:07,507 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2021-11-20 05:51:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:51:07,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:51:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:51:07,556 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:51:07,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:51:07,669 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:51:07,675 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:51:07,675 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:51:07,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:51:07 BoogieIcfgContainer [2021-11-20 05:51:07,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:51:07,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:51:07,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:51:07,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:51:07,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:51:07" (1/3) ... [2021-11-20 05:51:07,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46251417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:51:07, skipping insertion in model container [2021-11-20 05:51:07,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:07" (2/3) ... [2021-11-20 05:51:07,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46251417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:51:07, skipping insertion in model container [2021-11-20 05:51:07,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:51:07" (3/3) ... [2021-11-20 05:51:07,685 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2021-11-20 05:51:07,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:51:07,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-20 05:51:07,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:51:07,746 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 [2021-11-20 05:51:07,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-20 05:51:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:51:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 05:51:07,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:07,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:07,771 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:07,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1325924785, now seen corresponding path program 1 times [2021-11-20 05:51:07,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:07,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96261581] [2021-11-20 05:51:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:07,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:07,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:07,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96261581] [2021-11-20 05:51:07,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96261581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:07,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:07,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:51:07,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370920515] [2021-11-20 05:51:07,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:07,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:07,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:08,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:08,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:08,007 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2021-11-20 05:51:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:08,118 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-11-20 05:51:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:51:08,125 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 [2021-11-20 05:51:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:08,133 INFO L225 Difference]: With dead ends: 34 [2021-11-20 05:51:08,133 INFO L226 Difference]: Without dead ends: 21 [2021-11-20 05:51:08,136 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 [2021-11-20 05:51:08,140 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:08,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:51:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-20 05:51:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-20 05:51:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-20 05:51:08,179 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 7 [2021-11-20 05:51:08,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:08,180 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-20 05:51:08,180 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) [2021-11-20 05:51:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-20 05:51:08,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 05:51:08,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:08,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:08,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:51:08,182 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:08,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:08,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1846004663, now seen corresponding path program 1 times [2021-11-20 05:51:08,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:08,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991771973] [2021-11-20 05:51:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:08,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:08,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:08,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991771973] [2021-11-20 05:51:08,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991771973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:08,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:08,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:51:08,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745385995] [2021-11-20 05:51:08,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:08,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:08,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:08,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:08,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:08,251 INFO L87 Difference]: Start difference. First operand 21 states and 22 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) [2021-11-20 05:51:08,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:08,333 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-11-20 05:51:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:51:08,335 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 [2021-11-20 05:51:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:08,338 INFO L225 Difference]: With dead ends: 40 [2021-11-20 05:51:08,338 INFO L226 Difference]: Without dead ends: 37 [2021-11-20 05:51:08,339 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 [2021-11-20 05:51:08,341 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:08,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 67 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:51:08,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-20 05:51:08,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2021-11-20 05:51:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:51:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-11-20 05:51:08,353 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 8 [2021-11-20 05:51:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:08,354 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-11-20 05:51:08,354 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) [2021-11-20 05:51:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-11-20 05:51:08,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:51:08,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:08,356 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:08,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:51:08,357 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:08,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:08,358 INFO L85 PathProgramCache]: Analyzing trace with hash -498171083, now seen corresponding path program 1 times [2021-11-20 05:51:08,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:08,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424167471] [2021-11-20 05:51:08,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:08,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:08,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:08,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424167471] [2021-11-20 05:51:08,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424167471] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:08,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277656424] [2021-11-20 05:51:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:08,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:08,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:08,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:08,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:51:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:08,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:51:08,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:08,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:08,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277656424] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:08,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:51:08,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-20 05:51:08,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895563011] [2021-11-20 05:51:08,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:08,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:51:08,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:08,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:51:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:51:08,806 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-20 05:51:08,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:08,994 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2021-11-20 05:51:08,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 05:51:08,995 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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 13 [2021-11-20 05:51:08,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:08,997 INFO L225 Difference]: With dead ends: 92 [2021-11-20 05:51:08,998 INFO L226 Difference]: Without dead ends: 91 [2021-11-20 05:51:08,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-11-20 05:51:09,000 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 164 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:09,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 145 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:51:09,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-20 05:51:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 67. [2021-11-20 05:51:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 56 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:51:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2021-11-20 05:51:09,023 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 13 [2021-11-20 05:51:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:09,023 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2021-11-20 05:51:09,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-20 05:51:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2021-11-20 05:51:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:51:09,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:09,026 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:09,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:09,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:09,244 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:09,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2001544150, now seen corresponding path program 1 times [2021-11-20 05:51:09,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:09,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362588794] [2021-11-20 05:51:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:09,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 05:51:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:09,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:09,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362588794] [2021-11-20 05:51:09,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362588794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:09,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:09,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:51:09,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794079574] [2021-11-20 05:51:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:09,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:51:09,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:09,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:51:09,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:09,358 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:09,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:09,404 INFO L93 Difference]: Finished difference Result 104 states and 140 transitions. [2021-11-20 05:51:09,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:51:09,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-20 05:51:09,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:09,408 INFO L225 Difference]: With dead ends: 104 [2021-11-20 05:51:09,408 INFO L226 Difference]: Without dead ends: 93 [2021-11-20 05:51:09,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:09,409 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:09,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 46 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:51:09,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-20 05:51:09,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-11-20 05:51:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 78 states have internal predecessors, (98), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:51:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2021-11-20 05:51:09,425 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 15 [2021-11-20 05:51:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:09,426 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2021-11-20 05:51:09,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2021-11-20 05:51:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 05:51:09,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:09,427 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2021-11-20 05:51:09,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:51:09,428 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1663195447, now seen corresponding path program 2 times [2021-11-20 05:51:09,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:09,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350943373] [2021-11-20 05:51:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:09,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:09,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:09,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350943373] [2021-11-20 05:51:09,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350943373] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:09,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022672434] [2021-11-20 05:51:09,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:51:09,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:09,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:09,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:09,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:51:09,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:51:09,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:51:09,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 05:51:09,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:09,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:10,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022672434] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:10,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:51:10,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-20 05:51:10,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742683451] [2021-11-20 05:51:10,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:10,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 05:51:10,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:10,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 05:51:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:51:10,157 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 14 states have internal predecessors, (44), 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) [2021-11-20 05:51:10,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:10,668 INFO L93 Difference]: Finished difference Result 248 states and 263 transitions. [2021-11-20 05:51:10,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 05:51:10,669 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 14 states have internal predecessors, (44), 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 28 [2021-11-20 05:51:10,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:10,676 INFO L225 Difference]: With dead ends: 248 [2021-11-20 05:51:10,677 INFO L226 Difference]: Without dead ends: 247 [2021-11-20 05:51:10,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=515, Invalid=1207, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 05:51:10,681 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 529 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:10,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 285 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:51:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-20 05:51:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 207. [2021-11-20 05:51:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 171 states have (on average 1.3099415204678362) internal successors, (224), 174 states have internal predecessors, (224), 12 states have call successors, (12), 11 states have call predecessors, (12), 19 states have return successors, (21), 21 states have call predecessors, (21), 11 states have call successors, (21) [2021-11-20 05:51:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2021-11-20 05:51:10,733 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 28 [2021-11-20 05:51:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:10,734 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2021-11-20 05:51:10,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 14 states have internal predecessors, (44), 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) [2021-11-20 05:51:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2021-11-20 05:51:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:51:10,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:10,735 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:10,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:10,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:10,940 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash 907320634, now seen corresponding path program 1 times [2021-11-20 05:51:10,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:10,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753260235] [2021-11-20 05:51:10,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:10,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:10,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 05:51:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:11,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:51:11,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:11,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753260235] [2021-11-20 05:51:11,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753260235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:11,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390385345] [2021-11-20 05:51:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:11,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:11,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:11,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:11,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:51:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:11,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:51:11,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:51:11,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:51:11,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390385345] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:11,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:51:11,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-11-20 05:51:11,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099538415] [2021-11-20 05:51:11,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:11,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:51:11,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:51:11,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:51:11,327 INFO L87 Difference]: Start difference. First operand 207 states and 257 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 05:51:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:11,389 INFO L93 Difference]: Finished difference Result 400 states and 549 transitions. [2021-11-20 05:51:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:51:11,389 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 27 [2021-11-20 05:51:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:11,398 INFO L225 Difference]: With dead ends: 400 [2021-11-20 05:51:11,398 INFO L226 Difference]: Without dead ends: 398 [2021-11-20 05:51:11,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:51:11,402 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:11,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 92 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:51:11,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-20 05:51:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 377. [2021-11-20 05:51:11,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 315 states have (on average 1.253968253968254) internal successors, (395), 314 states have internal predecessors, (395), 12 states have call successors, (12), 11 states have call predecessors, (12), 46 states have return successors, (51), 51 states have call predecessors, (51), 11 states have call successors, (51) [2021-11-20 05:51:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 458 transitions. [2021-11-20 05:51:11,443 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 458 transitions. Word has length 27 [2021-11-20 05:51:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:11,443 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 458 transitions. [2021-11-20 05:51:11,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 05:51:11,444 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 458 transitions. [2021-11-20 05:51:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 05:51:11,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:11,445 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:11,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:11,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 05:51:11,645 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:11,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1937831374, now seen corresponding path program 1 times [2021-11-20 05:51:11,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:11,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872928902] [2021-11-20 05:51:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:11,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:11,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 05:51:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:11,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:51:11,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:11,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872928902] [2021-11-20 05:51:11,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872928902] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:11,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395389404] [2021-11-20 05:51:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:11,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:11,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:11,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:11,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:51:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:11,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:51:11,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:51:11,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:51:11,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395389404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:11,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:51:11,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-20 05:51:11,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695316834] [2021-11-20 05:51:11,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:11,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:51:11,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:11,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:51:11,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:51:11,885 INFO L87 Difference]: Start difference. First operand 377 states and 458 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:51:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:11,914 INFO L93 Difference]: Finished difference Result 377 states and 458 transitions. [2021-11-20 05:51:11,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:51:11,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-11-20 05:51:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:11,918 INFO L225 Difference]: With dead ends: 377 [2021-11-20 05:51:11,918 INFO L226 Difference]: Without dead ends: 333 [2021-11-20 05:51:11,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:51:11,922 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:11,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:51:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-20 05:51:11,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-20 05:51:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 279 states have (on average 1.060931899641577) internal successors, (296), 276 states have internal predecessors, (296), 12 states have call successors, (12), 11 states have call predecessors, (12), 40 states have return successors, (45), 45 states have call predecessors, (45), 11 states have call successors, (45) [2021-11-20 05:51:11,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 353 transitions. [2021-11-20 05:51:11,947 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 353 transitions. Word has length 28 [2021-11-20 05:51:11,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:11,948 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 353 transitions. [2021-11-20 05:51:11,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:51:11,948 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 353 transitions. [2021-11-20 05:51:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 05:51:11,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:11,962 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2021-11-20 05:51:11,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:12,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:12,178 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:12,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1017748105, now seen corresponding path program 3 times [2021-11-20 05:51:12,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:12,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243725218] [2021-11-20 05:51:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:12,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:12,468 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:12,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:12,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243725218] [2021-11-20 05:51:12,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243725218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:12,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943818274] [2021-11-20 05:51:12,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:51:12,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:12,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:12,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:12,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:51:12,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-20 05:51:12,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:51:12,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 05:51:12,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:12,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:13,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943818274] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:13,375 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:51:13,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-20 05:51:13,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004093132] [2021-11-20 05:51:13,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:13,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-20 05:51:13,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:13,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-20 05:51:13,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 05:51:13,379 INFO L87 Difference]: Start difference. First operand 333 states and 353 transitions. Second operand has 48 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 26 states have internal predecessors, (92), 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) [2021-11-20 05:51:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:14,558 INFO L93 Difference]: Finished difference Result 800 states and 833 transitions. [2021-11-20 05:51:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-20 05:51:14,559 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 26 states have internal predecessors, (92), 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 58 [2021-11-20 05:51:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:14,565 INFO L225 Difference]: With dead ends: 800 [2021-11-20 05:51:14,566 INFO L226 Difference]: Without dead ends: 799 [2021-11-20 05:51:14,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2204, Invalid=5278, Unknown=0, NotChecked=0, Total=7482 [2021-11-20 05:51:14,571 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1049 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:14,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 437 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:51:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-20 05:51:14,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 777. [2021-11-20 05:51:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 651 states have (on average 1.0629800307219661) internal successors, (692), 648 states have internal predecessors, (692), 24 states have call successors, (24), 23 states have call predecessors, (24), 100 states have return successors, (105), 105 states have call predecessors, (105), 23 states have call successors, (105) [2021-11-20 05:51:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 821 transitions. [2021-11-20 05:51:14,604 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 821 transitions. Word has length 58 [2021-11-20 05:51:14,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:14,604 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 821 transitions. [2021-11-20 05:51:14,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 26 states have internal predecessors, (92), 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) [2021-11-20 05:51:14,605 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 821 transitions. [2021-11-20 05:51:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-20 05:51:14,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:14,607 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:14,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:14,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:14,822 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:14,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1496867286, now seen corresponding path program 2 times [2021-11-20 05:51:14,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:14,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240353242] [2021-11-20 05:51:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:14,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 05:51:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-20 05:51:14,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:14,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240353242] [2021-11-20 05:51:14,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240353242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:14,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544543744] [2021-11-20 05:51:14,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:51:14,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:14,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:14,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:14,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:51:15,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:51:15,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:51:15,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:51:15,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-20 05:51:15,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-20 05:51:15,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544543744] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:15,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:51:15,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2021-11-20 05:51:15,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152247500] [2021-11-20 05:51:15,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:15,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 05:51:15,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:15,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 05:51:15,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:51:15,896 INFO L87 Difference]: Start difference. First operand 777 states and 821 transitions. Second operand has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-20 05:51:16,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:16,010 INFO L93 Difference]: Finished difference Result 1714 states and 1895 transitions. [2021-11-20 05:51:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 05:51:16,011 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 63 [2021-11-20 05:51:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:16,020 INFO L225 Difference]: With dead ends: 1714 [2021-11-20 05:51:16,020 INFO L226 Difference]: Without dead ends: 1416 [2021-11-20 05:51:16,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:51:16,029 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:16,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 97 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:51:16,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-11-20 05:51:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1416. [2021-11-20 05:51:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1203 states have (on average 1.029093931837074) internal successors, (1238), 1194 states have internal predecessors, (1238), 24 states have call successors, (24), 23 states have call predecessors, (24), 187 states have return successors, (198), 198 states have call predecessors, (198), 23 states have call successors, (198) [2021-11-20 05:51:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1460 transitions. [2021-11-20 05:51:16,095 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1460 transitions. Word has length 63 [2021-11-20 05:51:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:16,097 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 1460 transitions. [2021-11-20 05:51:16,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-20 05:51:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1460 transitions. [2021-11-20 05:51:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 05:51:16,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:16,101 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1] [2021-11-20 05:51:16,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:16,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-20 05:51:16,326 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash 255962615, now seen corresponding path program 4 times [2021-11-20 05:51:16,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:16,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994223575] [2021-11-20 05:51:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:16,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:17,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:17,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994223575] [2021-11-20 05:51:17,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994223575] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:17,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266020586] [2021-11-20 05:51:17,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:51:17,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:17,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:17,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:17,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 05:51:17,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:51:17,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:51:17,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-20 05:51:17,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:17,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:19,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266020586] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:19,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:51:19,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-20 05:51:19,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792569430] [2021-11-20 05:51:19,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:19,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-20 05:51:19,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:19,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-20 05:51:19,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2021-11-20 05:51:19,806 INFO L87 Difference]: Start difference. First operand 1416 states and 1460 transitions. Second operand has 96 states, 93 states have (on average 2.021505376344086) internal successors, (188), 50 states have internal predecessors, (188), 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) [2021-11-20 05:51:23,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:23,712 INFO L93 Difference]: Finished difference Result 3359 states and 3428 transitions. [2021-11-20 05:51:23,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-20 05:51:23,713 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 2.021505376344086) internal successors, (188), 50 states have internal predecessors, (188), 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 118 [2021-11-20 05:51:23,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:23,729 INFO L225 Difference]: With dead ends: 3359 [2021-11-20 05:51:23,729 INFO L226 Difference]: Without dead ends: 3358 [2021-11-20 05:51:23,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7136 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=9119, Invalid=22033, Unknown=0, NotChecked=0, Total=31152 [2021-11-20 05:51:23,742 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 3331 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:23,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3333 Valid, 1063 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 05:51:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-11-20 05:51:23,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3312. [2021-11-20 05:51:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3312 states, 2811 states have (on average 1.0295268587691213) internal successors, (2894), 2802 states have internal predecessors, (2894), 48 states have call successors, (48), 47 states have call predecessors, (48), 451 states have return successors, (462), 462 states have call predecessors, (462), 47 states have call successors, (462) [2021-11-20 05:51:23,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 3404 transitions. [2021-11-20 05:51:23,847 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 3404 transitions. Word has length 118 [2021-11-20 05:51:23,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:23,849 INFO L470 AbstractCegarLoop]: Abstraction has 3312 states and 3404 transitions. [2021-11-20 05:51:23,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 2.021505376344086) internal successors, (188), 50 states have internal predecessors, (188), 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) [2021-11-20 05:51:23,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 3404 transitions. [2021-11-20 05:51:23,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-20 05:51:23,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:23,854 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:23,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:24,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:24,070 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:24,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:24,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1973780778, now seen corresponding path program 3 times [2021-11-20 05:51:24,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:24,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669277767] [2021-11-20 05:51:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:24,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 05:51:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-20 05:51:24,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:24,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669277767] [2021-11-20 05:51:24,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669277767] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:24,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898670988] [2021-11-20 05:51:24,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:51:24,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:24,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:24,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:24,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 05:51:24,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-20 05:51:24,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:51:24,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 05:51:24,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-20 05:51:25,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-20 05:51:28,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898670988] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:28,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:51:28,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2021-11-20 05:51:28,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772885465] [2021-11-20 05:51:28,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:28,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-20 05:51:28,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-20 05:51:28,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 05:51:28,973 INFO L87 Difference]: Start difference. First operand 3312 states and 3404 transitions. Second operand has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-20 05:51:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:29,200 INFO L93 Difference]: Finished difference Result 7201 states and 7856 transitions. [2021-11-20 05:51:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 05:51:29,201 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) Word has length 135 [2021-11-20 05:51:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:29,229 INFO L225 Difference]: With dead ends: 7201 [2021-11-20 05:51:29,230 INFO L226 Difference]: Without dead ends: 5850 [2021-11-20 05:51:29,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 257 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 05:51:29,238 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 99 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:29,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 110 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:51:29,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2021-11-20 05:51:29,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5850. [2021-11-20 05:51:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5850 states, 4995 states have (on average 1.0142142142142143) internal successors, (5066), 4974 states have internal predecessors, (5066), 48 states have call successors, (48), 47 states have call predecessors, (48), 805 states have return successors, (828), 828 states have call predecessors, (828), 47 states have call successors, (828) [2021-11-20 05:51:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5850 states to 5850 states and 5942 transitions. [2021-11-20 05:51:29,411 INFO L78 Accepts]: Start accepts. Automaton has 5850 states and 5942 transitions. Word has length 135 [2021-11-20 05:51:29,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:29,411 INFO L470 AbstractCegarLoop]: Abstraction has 5850 states and 5942 transitions. [2021-11-20 05:51:29,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-20 05:51:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5850 states and 5942 transitions. [2021-11-20 05:51:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-20 05:51:29,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:29,421 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1, 1] [2021-11-20 05:51:29,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:29,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:29,634 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1181417737, now seen corresponding path program 5 times [2021-11-20 05:51:29,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:29,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617715044] [2021-11-20 05:51:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:29,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:32,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:32,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617715044] [2021-11-20 05:51:32,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617715044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:32,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777853195] [2021-11-20 05:51:32,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:51:32,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:32,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:32,402 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:32,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 05:51:32,623 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-11-20 05:51:32,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:51:32,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-20 05:51:32,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:33,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:39,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777853195] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:39,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:51:39,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-20 05:51:39,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498595949] [2021-11-20 05:51:39,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:39,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-20 05:51:39,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:51:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-20 05:51:39,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2021-11-20 05:51:39,643 INFO L87 Difference]: Start difference. First operand 5850 states and 5942 transitions. Second operand has 192 states, 189 states have (on average 2.0105820105820107) internal successors, (380), 98 states have internal predecessors, (380), 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) [2021-11-20 05:51:54,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:54,066 INFO L93 Difference]: Finished difference Result 13769 states and 13910 transitions. [2021-11-20 05:51:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2021-11-20 05:51:54,069 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 189 states have (on average 2.0105820105820107) internal successors, (380), 98 states have internal predecessors, (380), 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 238 [2021-11-20 05:51:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:54,133 INFO L225 Difference]: With dead ends: 13769 [2021-11-20 05:51:54,133 INFO L226 Difference]: Without dead ends: 13768 [2021-11-20 05:51:54,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30092 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=37097, Invalid=89995, Unknown=0, NotChecked=0, Total=127092 [2021-11-20 05:51:54,153 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 7168 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 1669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7170 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 3559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1669 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:54,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7170 Valid, 2138 Invalid, 3559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1669 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 05:51:54,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13768 states. [2021-11-20 05:51:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13768 to 13674. [2021-11-20 05:51:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13674 states, 11667 states have (on average 1.0143138767463786) internal successors, (11834), 11646 states have internal predecessors, (11834), 96 states have call successors, (96), 95 states have call predecessors, (96), 1909 states have return successors, (1932), 1932 states have call predecessors, (1932), 95 states have call successors, (1932) [2021-11-20 05:51:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13674 states to 13674 states and 13862 transitions. [2021-11-20 05:51:54,518 INFO L78 Accepts]: Start accepts. Automaton has 13674 states and 13862 transitions. Word has length 238 [2021-11-20 05:51:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:54,519 INFO L470 AbstractCegarLoop]: Abstraction has 13674 states and 13862 transitions. [2021-11-20 05:51:54,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 189 states have (on average 2.0105820105820107) internal successors, (380), 98 states have internal predecessors, (380), 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) [2021-11-20 05:51:54,520 INFO L276 IsEmpty]: Start isEmpty. Operand 13674 states and 13862 transitions. [2021-11-20 05:51:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-20 05:51:54,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:54,533 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:54,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:54,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:54,754 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:51:54,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:54,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1518549206, now seen corresponding path program 4 times [2021-11-20 05:51:54,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:51:54,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69354673] [2021-11-20 05:51:54,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:54,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:51:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:54,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 05:51:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:51:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2021-11-20 05:51:56,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:51:56,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69354673] [2021-11-20 05:51:56,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69354673] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:56,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428783449] [2021-11-20 05:51:56,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:51:56,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:51:56,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:56,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:51:56,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 05:51:56,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:51:56,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:51:56,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-20 05:51:56,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2021-11-20 05:51:57,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2021-11-20 05:52:31,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428783449] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:31,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:52:31,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 63 [2021-11-20 05:52:31,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145738881] [2021-11-20 05:52:31,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:31,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-20 05:52:31,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:31,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-20 05:52:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 05:52:31,381 INFO L87 Difference]: Start difference. First operand 13674 states and 13862 transitions. Second operand has 64 states, 63 states have (on average 3.0793650793650795) internal successors, (194), 64 states have internal predecessors, (194), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-20 05:52:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:31,676 INFO L93 Difference]: Finished difference Result 18955 states and 19902 transitions. [2021-11-20 05:52:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-20 05:52:31,677 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.0793650793650795) internal successors, (194), 64 states have internal predecessors, (194), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) Word has length 279 [2021-11-20 05:52:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:31,739 INFO L225 Difference]: With dead ends: 18955 [2021-11-20 05:52:31,740 INFO L226 Difference]: Without dead ends: 17494 [2021-11-20 05:52:31,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 549 SyntacticMatches, 38 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3263 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 05:52:31,753 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 90 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:31,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 154 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:52:31,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17494 states. [2021-11-20 05:52:32,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17494 to 17494. [2021-11-20 05:52:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17494 states, 14947 states have (on average 1.0106375861376864) internal successors, (15106), 14918 states have internal predecessors, (15106), 96 states have call successors, (96), 95 states have call predecessors, (96), 2449 states have return successors, (2480), 2480 states have call predecessors, (2480), 95 states have call successors, (2480) [2021-11-20 05:52:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17494 states to 17494 states and 17682 transitions. [2021-11-20 05:52:32,258 INFO L78 Accepts]: Start accepts. Automaton has 17494 states and 17682 transitions. Word has length 279 [2021-11-20 05:52:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:32,259 INFO L470 AbstractCegarLoop]: Abstraction has 17494 states and 17682 transitions. [2021-11-20 05:52:32,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.0793650793650795) internal successors, (194), 64 states have internal predecessors, (194), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-20 05:52:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 17494 states and 17682 transitions. [2021-11-20 05:52:32,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-20 05:52:32,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:32,282 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:32,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:32,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 05:52:32,501 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:52:32,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:32,504 INFO L85 PathProgramCache]: Analyzing trace with hash 56511274, now seen corresponding path program 5 times [2021-11-20 05:52:32,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:32,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475309587] [2021-11-20 05:52:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:32,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:32,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 05:52:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:32,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:33,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:33,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:33,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:33,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:34,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:52:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 3105 proven. 212 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2021-11-20 05:52:35,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:35,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475309587] [2021-11-20 05:52:35,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475309587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:52:35,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516246525] [2021-11-20 05:52:35,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:52:35,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:35,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:35,612 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:52:35,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 05:52:36,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-11-20 05:52:36,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:52:36,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-20 05:52:36,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 3165 proven. 152 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2021-11-20 05:52:37,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 3165 proven. 1922 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-11-20 05:54:12,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516246525] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:12,279 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:54:12,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 67] total 70 [2021-11-20 05:54:12,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703054270] [2021-11-20 05:54:12,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:12,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-20 05:54:12,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:12,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-20 05:54:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1164, Invalid=3666, Unknown=0, NotChecked=0, Total=4830 [2021-11-20 05:54:12,282 INFO L87 Difference]: Start difference. First operand 17494 states and 17682 transitions. Second operand has 70 states, 69 states have (on average 4.681159420289855) internal successors, (323), 69 states have internal predecessors, (323), 34 states have call successors, (34), 2 states have call predecessors, (34), 32 states have return successors, (91), 31 states have call predecessors, (91), 33 states have call successors, (91) [2021-11-20 05:54:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:13,224 INFO L93 Difference]: Finished difference Result 17964 states and 18153 transitions. [2021-11-20 05:54:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 05:54:13,224 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 4.681159420289855) internal successors, (323), 69 states have internal predecessors, (323), 34 states have call successors, (34), 2 states have call predecessors, (34), 32 states have return successors, (91), 31 states have call predecessors, (91), 33 states have call successors, (91) Word has length 375 [2021-11-20 05:54:13,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:13,232 INFO L225 Difference]: With dead ends: 17964 [2021-11-20 05:54:13,232 INFO L226 Difference]: Without dead ends: 480 [2021-11-20 05:54:13,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 776 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3311, Invalid=6991, Unknown=0, NotChecked=0, Total=10302 [2021-11-20 05:54:13,263 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 183 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:13,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1207 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:54:13,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-20 05:54:13,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-11-20 05:54:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 383 states have (on average 1.0026109660574412) internal successors, (384), 383 states have internal predecessors, (384), 95 states have call successors, (95), 95 states have call predecessors, (95), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:54:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2021-11-20 05:54:13,283 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 375 [2021-11-20 05:54:13,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:13,284 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2021-11-20 05:54:13,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 4.681159420289855) internal successors, (323), 69 states have internal predecessors, (323), 34 states have call successors, (34), 2 states have call predecessors, (34), 32 states have return successors, (91), 31 states have call predecessors, (91), 33 states have call successors, (91) [2021-11-20 05:54:13,284 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2021-11-20 05:54:13,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2021-11-20 05:54:13,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:13,296 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1, 1, 1] [2021-11-20 05:54:13,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:13,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:13,510 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:54:13,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:13,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1135517943, now seen corresponding path program 6 times [2021-11-20 05:54:13,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:13,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787298830] [2021-11-20 05:54:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:13,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:23,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:23,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787298830] [2021-11-20 05:54:23,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787298830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:54:23,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270672985] [2021-11-20 05:54:23,176 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 05:54:23,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:23,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:23,177 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:23,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 05:54:25,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-11-20 05:54:25,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:54:25,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-20 05:54:25,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:26,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:50,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270672985] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:50,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:54:50,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-11-20 05:54:50,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851507575] [2021-11-20 05:54:50,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:50,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-20 05:54:50,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:50,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-20 05:54:50,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36676, Invalid=110396, Unknown=0, NotChecked=0, Total=147072 [2021-11-20 05:54:50,458 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand has 384 states, 381 states have (on average 2.005249343832021) internal successors, (764), 194 states have internal predecessors, (764), 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) [2021-11-20 05:55:21,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:21,486 INFO L93 Difference]: Finished difference Result 961 states and 1056 transitions. [2021-11-20 05:55:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-20 05:55:21,486 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 381 states have (on average 2.005249343832021) internal successors, (764), 194 states have internal predecessors, (764), 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 478 [2021-11-20 05:55:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:21,490 INFO L225 Difference]: With dead ends: 961 [2021-11-20 05:55:21,490 INFO L226 Difference]: Without dead ends: 960 [2021-11-20 05:55:21,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71820 ImplicationChecksByTransitivity, 48.5s TimeCoverageRelationStatistics Valid=91301, Invalid=237601, Unknown=0, NotChecked=0, Total=328902 [2021-11-20 05:55:21,520 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 3602 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3602 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:21,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3602 Valid, 56 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 05:55:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-11-20 05:55:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 959. [2021-11-20 05:55:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 767 states have (on average 1.001303780964798) internal successors, (768), 767 states have internal predecessors, (768), 191 states have call successors, (191), 191 states have call predecessors, (191), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:55:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 959 transitions. [2021-11-20 05:55:21,551 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 959 transitions. Word has length 478 [2021-11-20 05:55:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:21,552 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 959 transitions. [2021-11-20 05:55:21,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 381 states have (on average 2.005249343832021) internal successors, (764), 194 states have internal predecessors, (764), 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) [2021-11-20 05:55:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 959 transitions. [2021-11-20 05:55:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2021-11-20 05:55:21,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:21,587 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1, 1, 1] [2021-11-20 05:55:21,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:55:21,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 05:55:21,802 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:55:21,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash 162391287, now seen corresponding path program 7 times [2021-11-20 05:55:21,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:55:21,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777112510] [2021-11-20 05:55:21,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:21,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:55:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:55:59,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:55:59,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777112510] [2021-11-20 05:55:59,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777112510] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:55:59,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465565040] [2021-11-20 05:55:59,003 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 05:55:59,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:55:59,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:55:59,019 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:55:59,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 05:56:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:00,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-20 05:56:00,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:03,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:38,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465565040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:57:38,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:57:38,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2021-11-20 05:57:38,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393262475] [2021-11-20 05:57:38,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:38,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2021-11-20 05:57:38,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:38,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2021-11-20 05:57:38,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147076, Invalid=441980, Unknown=0, NotChecked=0, Total=589056 [2021-11-20 05:57:38,943 INFO L87 Difference]: Start difference. First operand 959 states and 959 transitions. Second operand has 768 states, 765 states have (on average 2.0026143790849673) internal successors, (1532), 386 states have internal predecessors, (1532), 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) [2021-11-20 06:02:24,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:24,317 INFO L93 Difference]: Finished difference Result 1921 states and 2112 transitions. [2021-11-20 06:02:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2021-11-20 06:02:24,318 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 765 states have (on average 2.0026143790849673) internal successors, (1532), 386 states have internal predecessors, (1532), 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 958 [2021-11-20 06:02:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:24,325 INFO L225 Difference]: With dead ends: 1921 [2021-11-20 06:02:24,325 INFO L226 Difference]: Without dead ends: 1920 [2021-11-20 06:02:24,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2680 GetRequests, 1532 SyntacticMatches, 0 SemanticMatches, 1148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291084 ImplicationChecksByTransitivity, 195.7s TimeCoverageRelationStatistics Valid=366917, Invalid=954433, Unknown=0, NotChecked=0, Total=1321350 [2021-11-20 06:02:24,413 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7401 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 3460 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7401 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 3657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 3460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:24,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7401 Valid, 91 Invalid, 3657 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 3460 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 06:02:24,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-11-20 06:02:24,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1919. [2021-11-20 06:02:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1535 states have (on average 1.0006514657980456) internal successors, (1536), 1535 states have internal predecessors, (1536), 383 states have call successors, (383), 383 states have call predecessors, (383), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:02:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 1919 transitions. [2021-11-20 06:02:24,479 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 1919 transitions. Word has length 958 [2021-11-20 06:02:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:24,481 INFO L470 AbstractCegarLoop]: Abstraction has 1919 states and 1919 transitions. [2021-11-20 06:02:24,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 765 states have (on average 2.0026143790849673) internal successors, (1532), 386 states have internal predecessors, (1532), 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) [2021-11-20 06:02:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 1919 transitions. [2021-11-20 06:02:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1919 [2021-11-20 06:02:24,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:24,654 INFO L514 BasicCegarLoop]: trace histogram [383, 383, 383, 382, 382, 1, 1, 1, 1, 1] [2021-11-20 06:02:24,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:24,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07f50ccc-f139-4353-ac7b-cb72848ac9f8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 06:02:24,882 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 06:02:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1021078775, now seen corresponding path program 8 times [2021-11-20 06:02:24,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:24,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886578] [2021-11-20 06:02:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:24,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat