./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi03-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:12:14,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:12:14,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:12:14,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:12:14,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:12:14,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:12:14,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:12:14,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:12:14,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:12:14,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:12:14,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:12:14,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:12:14,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:12:14,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:12:14,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:12:14,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:12:14,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:12:14,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:12:14,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:12:14,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:12:14,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:12:14,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:12:14,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:12:14,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:12:14,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:12:14,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:12:14,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:12:14,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:12:14,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:12:14,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:12:14,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:12:14,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:12:14,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:12:14,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:12:14,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:12:14,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:12:14,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:12:14,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:12:14,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:12:14,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:12:14,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:12:14,300 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:12:14,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:12:14,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:12:14,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:12:14,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:12:14,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:12:14,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:12:14,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:12:14,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:12:14,337 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:12:14,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:12:14,338 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:12:14,338 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:12:14,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:12:14,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:12:14,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:12:14,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:12:14,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:12:14,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:12:14,339 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:12:14,340 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:12:14,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:12:14,340 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:12:14,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:12:14,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:12:14,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:12:14,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:12:14,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:12:14,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:12:14,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:12:14,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:12:14,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:12:14,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:12:14,343 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:12:14,343 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:12:14,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:12:14,343 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_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6256a35b65d93a8e45ad38c9510c3be689a890aeee58265a5723be13a7385a72 [2022-11-21 17:12:14,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:12:14,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:12:14,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:12:14,700 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:12:14,701 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:12:14,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/recursive/recHanoi03-2.c [2022-11-21 17:12:17,787 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:12:18,054 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:12:18,055 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/sv-benchmarks/c/recursive/recHanoi03-2.c [2022-11-21 17:12:18,065 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/data/831c66b90/766950dc39e44418aee8e0dd0b5c21d3/FLAGe2b3fb0ea [2022-11-21 17:12:18,087 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/data/831c66b90/766950dc39e44418aee8e0dd0b5c21d3 [2022-11-21 17:12:18,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:12:18,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:12:18,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:12:18,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:12:18,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:12:18,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd83b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18, skipping insertion in model container [2022-11-21 17:12:18,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:12:18,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:12:18,298 WARN L237 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_9f88dd8a-2b80-45e8-a926-501cf83cf56d/sv-benchmarks/c/recursive/recHanoi03-2.c[769,782] [2022-11-21 17:12:18,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:12:18,311 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:12:18,324 WARN L237 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_9f88dd8a-2b80-45e8-a926-501cf83cf56d/sv-benchmarks/c/recursive/recHanoi03-2.c[769,782] [2022-11-21 17:12:18,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:12:18,337 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:12:18,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18 WrapperNode [2022-11-21 17:12:18,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:12:18,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:12:18,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:12:18,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:12:18,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,366 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2022-11-21 17:12:18,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:12:18,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:12:18,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:12:18,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:12:18,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:12:18,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:12:18,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:12:18,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:12:18,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (1/1) ... [2022-11-21 17:12:18,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:12:18,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:18,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:12:18,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:12:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:12:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2022-11-21 17:12:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2022-11-21 17:12:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:12:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:12:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:12:18,522 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:12:18,525 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:12:18,725 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:12:18,731 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:12:18,731 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 17:12:18,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:12:18 BoogieIcfgContainer [2022-11-21 17:12:18,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:12:18,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:12:18,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:12:18,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:12:18,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:12:18" (1/3) ... [2022-11-21 17:12:18,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e70f07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:12:18, skipping insertion in model container [2022-11-21 17:12:18,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:18" (2/3) ... [2022-11-21 17:12:18,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e70f07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:12:18, skipping insertion in model container [2022-11-21 17:12:18,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:12:18" (3/3) ... [2022-11-21 17:12:18,742 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2022-11-21 17:12:18,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:12:18,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 17:12:18,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:12:18,831 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49766ad5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:12:18,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-21 17:12:18,836 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) [2022-11-21 17:12:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 17:12:18,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:18,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:18,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1325924785, now seen corresponding path program 1 times [2022-11-21 17:12:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:18,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387357582] [2022-11-21 17:12:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:18,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:19,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:19,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387357582] [2022-11-21 17:12:19,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387357582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:19,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:19,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:12:19,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917859354] [2022-11-21 17:12:19,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:19,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:12:19,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:19,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:12:19,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:12:19,163 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) [2022-11-21 17:12:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:19,266 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2022-11-21 17:12:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:12:19,269 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 [2022-11-21 17:12:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:19,277 INFO L225 Difference]: With dead ends: 34 [2022-11-21 17:12:19,277 INFO L226 Difference]: Without dead ends: 21 [2022-11-21 17:12:19,281 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:12:19,285 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:19,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 52 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:12:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-21 17:12:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-21 17:12:19,320 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) [2022-11-21 17:12:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-21 17:12:19,323 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 7 [2022-11-21 17:12:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:19,324 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-21 17:12:19,324 INFO L496 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) [2022-11-21 17:12:19,324 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-21 17:12:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:12:19,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:19,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:19,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:12:19,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:19,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1846004663, now seen corresponding path program 1 times [2022-11-21 17:12:19,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:19,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20391138] [2022-11-21 17:12:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:19,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:19,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:19,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20391138] [2022-11-21 17:12:19,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20391138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:19,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:19,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:12:19,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343167535] [2022-11-21 17:12:19,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:19,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:12:19,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:12:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:12:19,409 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) [2022-11-21 17:12:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:19,526 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-11-21 17:12:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:12:19,527 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 [2022-11-21 17:12:19,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:19,530 INFO L225 Difference]: With dead ends: 40 [2022-11-21 17:12:19,530 INFO L226 Difference]: Without dead ends: 37 [2022-11-21 17:12:19,531 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:12:19,532 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:19,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 59 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:12:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-21 17:12:19,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2022-11-21 17:12:19,541 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) [2022-11-21 17:12:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-11-21 17:12:19,550 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 8 [2022-11-21 17:12:19,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:19,551 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-11-21 17:12:19,551 INFO L496 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) [2022-11-21 17:12:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-11-21 17:12:19,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 17:12:19,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:19,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:19,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:12:19,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:19,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:19,555 INFO L85 PathProgramCache]: Analyzing trace with hash -498171083, now seen corresponding path program 1 times [2022-11-21 17:12:19,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:19,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856361622] [2022-11-21 17:12:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:19,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:19,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:19,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856361622] [2022-11-21 17:12:19,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856361622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:19,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460931394] [2022-11-21 17:12:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:19,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:19,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:19,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:19,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:12:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:19,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:12:19,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:19,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:12:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:20,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460931394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:12:20,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:12:20,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-21 17:12:20,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140535639] [2022-11-21 17:12:20,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:12:20,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:12:20,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:12:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:12:20,028 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) [2022-11-21 17:12:20,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:20,353 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2022-11-21 17:12:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 17:12:20,354 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 [2022-11-21 17:12:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:20,359 INFO L225 Difference]: With dead ends: 92 [2022-11-21 17:12:20,360 INFO L226 Difference]: Without dead ends: 91 [2022-11-21 17:12:20,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:12:20,366 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 164 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:20,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 132 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:12:20,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-21 17:12:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 67. [2022-11-21 17:12:20,396 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) [2022-11-21 17:12:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2022-11-21 17:12:20,405 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 13 [2022-11-21 17:12:20,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:20,406 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2022-11-21 17:12:20,407 INFO L496 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) [2022-11-21 17:12:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2022-11-21 17:12:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:12:20,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:20,408 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:20,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:12:20,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:20,615 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2001544150, now seen corresponding path program 1 times [2022-11-21 17:12:20,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:20,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403161525] [2022-11-21 17:12:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:12:20,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:20,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403161525] [2022-11-21 17:12:20,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403161525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:20,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:20,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:12:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12776888] [2022-11-21 17:12:20,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:20,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:12:20,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:12:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:12:20,795 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) [2022-11-21 17:12:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:20,826 INFO L93 Difference]: Finished difference Result 104 states and 140 transitions. [2022-11-21 17:12:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:12:20,827 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 [2022-11-21 17:12:20,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:20,829 INFO L225 Difference]: With dead ends: 104 [2022-11-21 17:12:20,829 INFO L226 Difference]: Without dead ends: 93 [2022-11-21 17:12:20,830 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:12:20,831 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:20,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:12:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-21 17:12:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-11-21 17:12:20,842 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) [2022-11-21 17:12:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2022-11-21 17:12:20,844 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 15 [2022-11-21 17:12:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:20,845 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2022-11-21 17:12:20,845 INFO L496 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) [2022-11-21 17:12:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2022-11-21 17:12:20,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 17:12:20,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:20,846 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-11-21 17:12:20,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:12:20,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:20,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:20,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1663195447, now seen corresponding path program 2 times [2022-11-21 17:12:20,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:20,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053090611] [2022-11-21 17:12:20,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:20,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:21,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:21,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053090611] [2022-11-21 17:12:21,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053090611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:21,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013737797] [2022-11-21 17:12:21,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:12:21,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:21,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:21,067 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:21,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:12:21,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:12:21,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:12:21,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 17:12:21,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:21,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:12:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:21,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013737797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:12:21,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:12:21,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-21 17:12:21,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638587181] [2022-11-21 17:12:21,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:12:21,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:12:21,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:21,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:12:21,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:12:21,554 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) [2022-11-21 17:12:22,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:22,174 INFO L93 Difference]: Finished difference Result 248 states and 263 transitions. [2022-11-21 17:12:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 17:12:22,175 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 [2022-11-21 17:12:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:22,190 INFO L225 Difference]: With dead ends: 248 [2022-11-21 17:12:22,192 INFO L226 Difference]: Without dead ends: 247 [2022-11-21 17:12:22,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=515, Invalid=1207, Unknown=0, NotChecked=0, Total=1722 [2022-11-21 17:12:22,194 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 529 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:22,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 271 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:12:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-21 17:12:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 207. [2022-11-21 17:12:22,232 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) [2022-11-21 17:12:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2022-11-21 17:12:22,235 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 28 [2022-11-21 17:12:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:22,235 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2022-11-21 17:12:22,236 INFO L496 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) [2022-11-21 17:12:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2022-11-21 17:12:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-21 17:12:22,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:22,237 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:22,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 17:12:22,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:22,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:22,449 INFO L85 PathProgramCache]: Analyzing trace with hash 907320634, now seen corresponding path program 1 times [2022-11-21 17:12:22,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:22,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261955719] [2022-11-21 17:12:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:22,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:12:22,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:22,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261955719] [2022-11-21 17:12:22,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261955719] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:22,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699304880] [2022-11-21 17:12:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:22,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:22,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:22,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:22,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:12:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:22,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:12:22,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:12:22,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:12:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:12:22,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699304880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:12:22,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:12:22,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 17:12:22,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740543403] [2022-11-21 17:12:22,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:12:22,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:12:22,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:12:22,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:12:22,836 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) [2022-11-21 17:12:22,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:22,912 INFO L93 Difference]: Finished difference Result 400 states and 549 transitions. [2022-11-21 17:12:22,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:12:22,912 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 [2022-11-21 17:12:22,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:22,919 INFO L225 Difference]: With dead ends: 400 [2022-11-21 17:12:22,919 INFO L226 Difference]: Without dead ends: 398 [2022-11-21 17:12:22,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:12:22,922 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:22,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 90 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:12:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-21 17:12:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 377. [2022-11-21 17:12:22,958 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) [2022-11-21 17:12:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 458 transitions. [2022-11-21 17:12:22,965 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 458 transitions. Word has length 27 [2022-11-21 17:12:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:22,965 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 458 transitions. [2022-11-21 17:12:22,966 INFO L496 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) [2022-11-21 17:12:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 458 transitions. [2022-11-21 17:12:22,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 17:12:22,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:22,968 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:22,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 17:12:23,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:23,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1937831374, now seen corresponding path program 1 times [2022-11-21 17:12:23,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:23,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812555043] [2022-11-21 17:12:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:23,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:23,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:23,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:12:23,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:23,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812555043] [2022-11-21 17:12:23,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812555043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:23,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334207728] [2022-11-21 17:12:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:23,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:23,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:23,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:23,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:12:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:23,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:12:23,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:12:23,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:12:23,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334207728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:23,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:12:23,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:12:23,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018914133] [2022-11-21 17:12:23,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:23,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:12:23,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:23,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:12:23,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:12:23,374 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) [2022-11-21 17:12:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:23,409 INFO L93 Difference]: Finished difference Result 377 states and 458 transitions. [2022-11-21 17:12:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:12:23,410 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 [2022-11-21 17:12:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:23,411 INFO L225 Difference]: With dead ends: 377 [2022-11-21 17:12:23,412 INFO L226 Difference]: Without dead ends: 333 [2022-11-21 17:12:23,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:12:23,413 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:23,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:12:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-21 17:12:23,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-11-21 17:12:23,428 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) [2022-11-21 17:12:23,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 353 transitions. [2022-11-21 17:12:23,430 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 353 transitions. Word has length 28 [2022-11-21 17:12:23,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:23,431 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 353 transitions. [2022-11-21 17:12:23,431 INFO L496 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) [2022-11-21 17:12:23,431 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 353 transitions. [2022-11-21 17:12:23,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-21 17:12:23,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:23,433 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2022-11-21 17:12:23,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:12:23,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:23,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:23,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1017748105, now seen corresponding path program 3 times [2022-11-21 17:12:23,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:23,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075107491] [2022-11-21 17:12:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:23,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:24,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:24,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075107491] [2022-11-21 17:12:24,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075107491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:24,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133911711] [2022-11-21 17:12:24,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:12:24,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:24,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:24,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:24,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:12:24,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-21 17:12:24,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:12:24,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 17:12:24,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:24,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:12:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:25,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133911711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:12:25,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:12:25,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-21 17:12:25,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913062821] [2022-11-21 17:12:25,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:12:25,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-21 17:12:25,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:25,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-21 17:12:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2022-11-21 17:12:25,051 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) [2022-11-21 17:12:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:26,430 INFO L93 Difference]: Finished difference Result 800 states and 833 transitions. [2022-11-21 17:12:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-21 17:12:26,431 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 [2022-11-21 17:12:26,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:26,437 INFO L225 Difference]: With dead ends: 800 [2022-11-21 17:12:26,437 INFO L226 Difference]: Without dead ends: 799 [2022-11-21 17:12:26,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2204, Invalid=5278, Unknown=0, NotChecked=0, Total=7482 [2022-11-21 17:12:26,442 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1049 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:26,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 423 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:12:26,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-11-21 17:12:26,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 777. [2022-11-21 17:12:26,479 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) [2022-11-21 17:12:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 821 transitions. [2022-11-21 17:12:26,483 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 821 transitions. Word has length 58 [2022-11-21 17:12:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:26,483 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 821 transitions. [2022-11-21 17:12:26,483 INFO L496 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) [2022-11-21 17:12:26,484 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 821 transitions. [2022-11-21 17:12:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 17:12:26,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:26,493 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:26,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:12:26,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:26,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1496867286, now seen corresponding path program 2 times [2022-11-21 17:12:26,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:26,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778448367] [2022-11-21 17:12:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:26,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:27,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:27,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-21 17:12:27,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:27,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778448367] [2022-11-21 17:12:27,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778448367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:27,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964751664] [2022-11-21 17:12:27,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:12:27,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:27,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:27,143 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:27,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:12:27,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:12:27,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:12:27,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 17:12:27,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-21 17:12:27,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:12:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-21 17:12:27,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964751664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:12:27,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:12:27,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-21 17:12:27,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117899482] [2022-11-21 17:12:27,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:12:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:12:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:27,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:12:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:12:27,950 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) [2022-11-21 17:12:28,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:28,068 INFO L93 Difference]: Finished difference Result 1714 states and 1895 transitions. [2022-11-21 17:12:28,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 17:12:28,068 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 [2022-11-21 17:12:28,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:28,074 INFO L225 Difference]: With dead ends: 1714 [2022-11-21 17:12:28,074 INFO L226 Difference]: Without dead ends: 1416 [2022-11-21 17:12:28,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:12:28,077 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:28,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 94 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:12:28,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2022-11-21 17:12:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1416. [2022-11-21 17:12:28,112 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) [2022-11-21 17:12:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1460 transitions. [2022-11-21 17:12:28,117 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1460 transitions. Word has length 63 [2022-11-21 17:12:28,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:28,118 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 1460 transitions. [2022-11-21 17:12:28,118 INFO L496 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) [2022-11-21 17:12:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1460 transitions. [2022-11-21 17:12:28,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-21 17:12:28,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:28,121 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1] [2022-11-21 17:12:28,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:12:28,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:28,328 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:28,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:28,329 INFO L85 PathProgramCache]: Analyzing trace with hash 255962615, now seen corresponding path program 4 times [2022-11-21 17:12:28,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:28,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513394825] [2022-11-21 17:12:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:28,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:29,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:29,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513394825] [2022-11-21 17:12:29,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513394825] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:29,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141954537] [2022-11-21 17:12:29,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:12:29,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:29,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:29,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:29,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:12:30,031 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:12:30,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:12:30,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-21 17:12:30,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:30,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:12:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:32,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141954537] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:12:32,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:12:32,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-21 17:12:32,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324614066] [2022-11-21 17:12:32,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:12:32,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-21 17:12:32,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:32,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-21 17:12:32,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2022-11-21 17:12:32,864 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) [2022-11-21 17:12:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:37,451 INFO L93 Difference]: Finished difference Result 3359 states and 3428 transitions. [2022-11-21 17:12:37,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-11-21 17:12:37,452 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 [2022-11-21 17:12:37,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:37,472 INFO L225 Difference]: With dead ends: 3359 [2022-11-21 17:12:37,473 INFO L226 Difference]: Without dead ends: 3358 [2022-11-21 17:12:37,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7136 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=9119, Invalid=22033, Unknown=0, NotChecked=0, Total=31152 [2022-11-21 17:12:37,489 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 3331 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3333 Valid, 1048 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 17:12:37,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2022-11-21 17:12:37,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3312. [2022-11-21 17:12:37,569 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) [2022-11-21 17:12:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 3404 transitions. [2022-11-21 17:12:37,583 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 3404 transitions. Word has length 118 [2022-11-21 17:12:37,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:37,585 INFO L495 AbstractCegarLoop]: Abstraction has 3312 states and 3404 transitions. [2022-11-21 17:12:37,585 INFO L496 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) [2022-11-21 17:12:37,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 3404 transitions. [2022-11-21 17:12:37,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-21 17:12:37,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:37,595 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:37,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 17:12:37,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 17:12:37,802 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:37,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1973780778, now seen corresponding path program 3 times [2022-11-21 17:12:37,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:37,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980941262] [2022-11-21 17:12:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:37,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:12:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:38,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:38,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:38,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:38,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-21 17:12:39,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:39,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980941262] [2022-11-21 17:12:39,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980941262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:39,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683329936] [2022-11-21 17:12:39,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:12:39,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:39,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:39,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:39,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:12:39,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-21 17:12:39,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:12:39,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 17:12:39,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-21 17:12:39,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:12:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-21 17:12:45,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683329936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:12:45,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:12:45,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-11-21 17:12:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245177664] [2022-11-21 17:12:45,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:12:45,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-21 17:12:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:45,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-21 17:12:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-11-21 17:12:45,316 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) [2022-11-21 17:12:45,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:45,596 INFO L93 Difference]: Finished difference Result 7201 states and 7856 transitions. [2022-11-21 17:12:45,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-21 17:12:45,597 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 [2022-11-21 17:12:45,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:45,616 INFO L225 Difference]: With dead ends: 7201 [2022-11-21 17:12:45,616 INFO L226 Difference]: Without dead ends: 5850 [2022-11-21 17:12:45,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-11-21 17:12:45,622 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 99 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:45,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 108 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:12:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2022-11-21 17:12:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5850. [2022-11-21 17:12:45,746 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) [2022-11-21 17:12:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5850 states to 5850 states and 5942 transitions. [2022-11-21 17:12:45,766 INFO L78 Accepts]: Start accepts. Automaton has 5850 states and 5942 transitions. Word has length 135 [2022-11-21 17:12:45,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:45,766 INFO L495 AbstractCegarLoop]: Abstraction has 5850 states and 5942 transitions. [2022-11-21 17:12:45,766 INFO L496 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) [2022-11-21 17:12:45,767 INFO L276 IsEmpty]: Start isEmpty. Operand 5850 states and 5942 transitions. [2022-11-21 17:12:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-21 17:12:45,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:45,773 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1, 1] [2022-11-21 17:12:45,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-21 17:12:45,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 17:12:45,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:12:45,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1181417737, now seen corresponding path program 5 times [2022-11-21 17:12:45,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:45,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465804209] [2022-11-21 17:12:45,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:45,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:51,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:51,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465804209] [2022-11-21 17:12:51,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465804209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:51,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698522931] [2022-11-21 17:12:51,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:12:51,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:51,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:51,439 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:51,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 17:12:51,728 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-11-21 17:12:51,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:12:51,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-21 17:12:51,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:52,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:13:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:13:00,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698522931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:13:00,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:13:00,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-21 17:13:00,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900789274] [2022-11-21 17:13:00,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:13:00,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-21 17:13:00,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-21 17:13:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2022-11-21 17:13:00,346 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) [2022-11-21 17:13:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:17,759 INFO L93 Difference]: Finished difference Result 13769 states and 13910 transitions. [2022-11-21 17:13:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2022-11-21 17:13:17,763 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 [2022-11-21 17:13:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:17,812 INFO L225 Difference]: With dead ends: 13769 [2022-11-21 17:13:17,813 INFO L226 Difference]: Without dead ends: 13768 [2022-11-21 17:13:17,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30092 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=37097, Invalid=89995, Unknown=0, NotChecked=0, Total=127092 [2022-11-21 17:13:17,832 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 7168 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 1669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7170 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 3573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1669 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:17,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7170 Valid, 2124 Invalid, 3573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1669 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:13:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13768 states. [2022-11-21 17:13:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13768 to 13674. [2022-11-21 17:13:18,268 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) [2022-11-21 17:13:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13674 states to 13674 states and 13862 transitions. [2022-11-21 17:13:18,319 INFO L78 Accepts]: Start accepts. Automaton has 13674 states and 13862 transitions. Word has length 238 [2022-11-21 17:13:18,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:18,320 INFO L495 AbstractCegarLoop]: Abstraction has 13674 states and 13862 transitions. [2022-11-21 17:13:18,336 INFO L496 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) [2022-11-21 17:13:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 13674 states and 13862 transitions. [2022-11-21 17:13:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-21 17:13:18,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:18,348 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:18,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:13:18,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 17:13:18,555 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:13:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1518549206, now seen corresponding path program 4 times [2022-11-21 17:13:18,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:18,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512628986] [2022-11-21 17:13:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:18,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:19,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:21,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:21,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:22,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:22,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:22,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:22,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:23,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:13:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2022-11-21 17:13:24,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:24,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512628986] [2022-11-21 17:13:24,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512628986] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:13:24,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401541573] [2022-11-21 17:13:24,384 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:13:24,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:13:24,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:13:24,385 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:13:24,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 17:13:24,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:13:24,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:13:24,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-21 17:13:24,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:13:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2022-11-21 17:13:25,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:14:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2022-11-21 17:14:11,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401541573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:14:11,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:14:11,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 63 [2022-11-21 17:14:11,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518953725] [2022-11-21 17:14:11,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:14:11,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-21 17:14:11,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:14:11,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-21 17:14:11,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2022-11-21 17:14:11,663 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) [2022-11-21 17:14:11,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:14:11,995 INFO L93 Difference]: Finished difference Result 18955 states and 19902 transitions. [2022-11-21 17:14:11,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-21 17:14:11,996 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 [2022-11-21 17:14:11,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:14:12,050 INFO L225 Difference]: With dead ends: 18955 [2022-11-21 17:14:12,050 INFO L226 Difference]: Without dead ends: 17494 [2022-11-21 17:14:12,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 555 SyntacticMatches, 32 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3426 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2022-11-21 17:14:12,063 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 90 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:14:12,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 151 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:14:12,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17494 states. [2022-11-21 17:14:12,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17494 to 17494. [2022-11-21 17:14:12,442 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) [2022-11-21 17:14:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17494 states to 17494 states and 17682 transitions. [2022-11-21 17:14:12,482 INFO L78 Accepts]: Start accepts. Automaton has 17494 states and 17682 transitions. Word has length 279 [2022-11-21 17:14:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:14:12,483 INFO L495 AbstractCegarLoop]: Abstraction has 17494 states and 17682 transitions. [2022-11-21 17:14:12,483 INFO L496 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) [2022-11-21 17:14:12,483 INFO L276 IsEmpty]: Start isEmpty. Operand 17494 states and 17682 transitions. [2022-11-21 17:14:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2022-11-21 17:14:12,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:14:12,503 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2022-11-21 17:14:12,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:12,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 17:14:12,710 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:14:12,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:12,711 INFO L85 PathProgramCache]: Analyzing trace with hash 56511274, now seen corresponding path program 5 times [2022-11-21 17:14:12,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:12,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141364667] [2022-11-21 17:14:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:12,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:14:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:14,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:17,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:18,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:19,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:20,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:20,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:20,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:22,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:22,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:22,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:22,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:23,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:23,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:23,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:23,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:14:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 3105 proven. 242 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2022-11-21 17:14:23,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:14:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141364667] [2022-11-21 17:14:23,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141364667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:14:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696983173] [2022-11-21 17:14:23,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:14:23,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:14:23,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:23,735 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:14:23,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 17:14:24,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-11-21 17:14:24,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:14:24,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-21 17:14:24,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 3165 proven. 152 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2022-11-21 17:14:25,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:16:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 3165 proven. 1922 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-21 17:16:37,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696983173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:16:37,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:16:37,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 67] total 71 [2022-11-21 17:16:37,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466286564] [2022-11-21 17:16:37,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:16:37,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-11-21 17:16:37,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:16:37,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-11-21 17:16:37,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1169, Invalid=3801, Unknown=0, NotChecked=0, Total=4970 [2022-11-21 17:16:37,784 INFO L87 Difference]: Start difference. First operand 17494 states and 17682 transitions. Second operand has 71 states, 70 states have (on average 4.628571428571429) internal successors, (324), 70 states have internal predecessors, (324), 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) [2022-11-21 17:16:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:16:38,911 INFO L93 Difference]: Finished difference Result 17964 states and 18153 transitions. [2022-11-21 17:16:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 17:16:38,912 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 4.628571428571429) internal successors, (324), 70 states have internal predecessors, (324), 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 [2022-11-21 17:16:38,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:16:38,917 INFO L225 Difference]: With dead ends: 17964 [2022-11-21 17:16:38,917 INFO L226 Difference]: Without dead ends: 480 [2022-11-21 17:16:38,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 742 SyntacticMatches, 35 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3348, Invalid=7158, Unknown=0, NotChecked=0, Total=10506 [2022-11-21 17:16:38,939 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 147 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:16:38,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1211 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:16:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-21 17:16:38,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2022-11-21 17:16:38,964 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) [2022-11-21 17:16:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2022-11-21 17:16:38,966 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 375 [2022-11-21 17:16:38,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:16:38,966 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2022-11-21 17:16:38,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 4.628571428571429) internal successors, (324), 70 states have internal predecessors, (324), 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) [2022-11-21 17:16:38,967 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2022-11-21 17:16:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-11-21 17:16:38,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:16:38,976 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1, 1, 1] [2022-11-21 17:16:38,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:16:39,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:16:39,186 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:16:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:16:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1135517943, now seen corresponding path program 6 times [2022-11-21 17:16:39,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:16:39,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133246534] [2022-11-21 17:16:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:16:39,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:16:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:16:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:16:56,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:16:56,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133246534] [2022-11-21 17:16:56,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133246534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:16:56,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568089493] [2022-11-21 17:16:56,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:16:56,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:16:56,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:16:56,980 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:16:56,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 17:16:59,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-11-21 17:16:59,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:16:59,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-21 17:16:59,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:17:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:00,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:17:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:30,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568089493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:17:30,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:17:30,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-11-21 17:17:30,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103589557] [2022-11-21 17:17:30,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:17:30,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-21 17:17:30,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-21 17:17:30,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36676, Invalid=110396, Unknown=0, NotChecked=0, Total=147072 [2022-11-21 17:17:30,838 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) [2022-11-21 17:18:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:18:10,992 INFO L93 Difference]: Finished difference Result 961 states and 1056 transitions. [2022-11-21 17:18:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-21 17:18:10,993 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 [2022-11-21 17:18:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:18:10,996 INFO L225 Difference]: With dead ends: 961 [2022-11-21 17:18:10,996 INFO L226 Difference]: Without dead ends: 960 [2022-11-21 17:18:11,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 763 SyntacticMatches, 1 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71820 ImplicationChecksByTransitivity, 63.0s TimeCoverageRelationStatistics Valid=91301, Invalid=237601, Unknown=0, NotChecked=0, Total=328902 [2022-11-21 17:18:11,016 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4181 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:18:11,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4181 Valid, 58 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 17:18:11,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-11-21 17:18:11,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 959. [2022-11-21 17:18:11,068 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) [2022-11-21 17:18:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 959 transitions. [2022-11-21 17:18:11,072 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 959 transitions. Word has length 478 [2022-11-21 17:18:11,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:18:11,073 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 959 transitions. [2022-11-21 17:18:11,073 INFO L496 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) [2022-11-21 17:18:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 959 transitions. [2022-11-21 17:18:11,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2022-11-21 17:18:11,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:18:11,109 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1, 1, 1] [2022-11-21 17:18:11,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:18:11,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:18:11,322 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:18:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash 162391287, now seen corresponding path program 7 times [2022-11-21 17:18:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:11,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246231489] [2022-11-21 17:18:11,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:11,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:38,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:38,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246231489] [2022-11-21 17:19:38,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246231489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:19:38,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636318735] [2022-11-21 17:19:38,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:19:38,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:19:38,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:38,595 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:19:38,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f88dd8a-2b80-45e8-a926-501cf83cf56d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 17:19:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:41,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-21 17:19:41,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:19:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:42,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:21:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:46,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636318735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:21:46,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:21:46,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2022-11-21 17:21:46,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468098089] [2022-11-21 17:21:46,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:21:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-11-21 17:21:46,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:46,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-11-21 17:21:46,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147076, Invalid=441980, Unknown=0, NotChecked=0, Total=589056 [2022-11-21 17:21:46,210 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)