./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN --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 9c0fb6a0d32b99c9a776859d2bc15d9177dc584955a2c1baa8ac133e976f40f7 --- 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-6b4ec56 [2022-11-20 11:07:24,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:07:24,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:07:24,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:07:24,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:07:24,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:07:24,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:07:24,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:07:24,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:07:24,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:07:24,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:07:24,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:07:24,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:07:24,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:07:24,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:07:24,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:07:24,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:07:24,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:07:24,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:07:24,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:07:24,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:07:24,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:07:24,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:07:24,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:07:24,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:07:24,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:07:24,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:07:24,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:07:24,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:07:24,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:07:24,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:07:24,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:07:24,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:07:24,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:07:24,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:07:24,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:07:24,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:07:24,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:07:24,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:07:24,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:07:24,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:07:24,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:07:24,426 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:07:24,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:07:24,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:07:24,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:07:24,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:07:24,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:07:24,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:07:24,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:07:24,431 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:07:24,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:07:24,433 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:07:24,433 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:07:24,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:07:24,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:07:24,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:07:24,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:07:24,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:07:24,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:07:24,436 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:07:24,436 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:07:24,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:07:24,437 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:07:24,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:07:24,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:07:24,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:07:24,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:07:24,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:07:24,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:07:24,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:07:24,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:07:24,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:07:24,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:07:24,441 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:07:24,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:07:24,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:07:24,442 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_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c0fb6a0d32b99c9a776859d2bc15d9177dc584955a2c1baa8ac133e976f40f7 [2022-11-20 11:07:24,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:07:24,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:07:24,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:07:24,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:07:24,858 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:07:24,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2022-11-20 11:07:28,023 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:07:28,272 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:07:28,273 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2022-11-20 11:07:28,280 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/data/7e4c8e9c5/b812a073dd3d442ea5c94a714e43e5d0/FLAGa9d44de77 [2022-11-20 11:07:28,304 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/data/7e4c8e9c5/b812a073dd3d442ea5c94a714e43e5d0 [2022-11-20 11:07:28,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:07:28,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:07:28,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:07:28,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:07:28,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:07:28,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fd99b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28, skipping insertion in model container [2022-11-20 11:07:28,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:07:28,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:07:28,498 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_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c[548,561] [2022-11-20 11:07:28,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:07:28,511 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:07:28,528 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_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c[548,561] [2022-11-20 11:07:28,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:07:28,541 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:07:28,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28 WrapperNode [2022-11-20 11:07:28,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:07:28,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:07:28,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:07:28,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:07:28,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,580 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-20 11:07:28,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:07:28,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:07:28,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:07:28,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:07:28,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,600 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:07:28,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:07:28,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:07:28,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:07:28,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (1/1) ... [2022-11-20 11:07:28,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:07:28,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:28,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:07:28,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:07:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:07:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:07:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2022-11-20 11:07:28,708 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2022-11-20 11:07:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:07:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:07:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-11-20 11:07:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-11-20 11:07:28,783 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:07:28,786 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:07:29,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:07:29,011 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:07:29,012 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:07:29,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:29 BoogieIcfgContainer [2022-11-20 11:07:29,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:07:29,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:07:29,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:07:29,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:07:29,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:07:28" (1/3) ... [2022-11-20 11:07:29,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a22680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:07:29, skipping insertion in model container [2022-11-20 11:07:29,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:28" (2/3) ... [2022-11-20 11:07:29,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a22680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:07:29, skipping insertion in model container [2022-11-20 11:07:29,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:29" (3/3) ... [2022-11-20 11:07:29,038 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2022-11-20 11:07:29,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:07:29,091 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 11:07:29,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:07:29,171 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;@5804dbca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:07:29,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-20 11:07:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 31 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:07:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:07:29,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:29,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:07:29,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:29,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1363684146, now seen corresponding path program 1 times [2022-11-20 11:07:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:29,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623844954] [2022-11-20 11:07:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:29,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:29,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623844954] [2022-11-20 11:07:29,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623844954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:29,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:29,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:07:29,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794257403] [2022-11-20 11:07:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:29,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:07:29,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:07:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:29,454 INFO L87 Difference]: Start difference. First operand has 37 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 31 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-20 11:07:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:29,544 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2022-11-20 11:07:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:07:29,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 6 [2022-11-20 11:07:29,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:29,556 INFO L225 Difference]: With dead ends: 56 [2022-11-20 11:07:29,556 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 11:07:29,560 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 [2022-11-20 11:07:29,586 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:29,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 121 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:07:29,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 11:07:29,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2022-11-20 11:07:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.48) internal successors, (37), 32 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:07:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-11-20 11:07:29,637 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 6 [2022-11-20 11:07:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:29,638 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-11-20 11:07:29,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-20 11:07:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-11-20 11:07:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 11:07:29,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:29,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:29,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:07:29,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:29,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:29,642 INFO L85 PathProgramCache]: Analyzing trace with hash -675464365, now seen corresponding path program 1 times [2022-11-20 11:07:29,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:29,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036757965] [2022-11-20 11:07:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:29,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:29,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:29,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036757965] [2022-11-20 11:07:29,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036757965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:29,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:29,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:07:29,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386323308] [2022-11-20 11:07:29,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:29,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:07:29,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:07:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:29,716 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. 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) [2022-11-20 11:07:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:29,769 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-11-20 11:07:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:07:29,770 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 [2022-11-20 11:07:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:29,771 INFO L225 Difference]: With dead ends: 42 [2022-11-20 11:07:29,771 INFO L226 Difference]: Without dead ends: 41 [2022-11-20 11:07:29,772 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 [2022-11-20 11:07:29,774 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:29,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 110 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:07:29,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-20 11:07:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2022-11-20 11:07:29,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.44) internal successors, (36), 32 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:07:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-20 11:07:29,782 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 7 [2022-11-20 11:07:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:29,783 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-20 11:07:29,783 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) [2022-11-20 11:07:29,784 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-20 11:07:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:07:29,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:29,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:29,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:07:29,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash -178347838, now seen corresponding path program 1 times [2022-11-20 11:07:29,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:29,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627615775] [2022-11-20 11:07:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:29,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:29,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:29,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627615775] [2022-11-20 11:07:29,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627615775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:29,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:29,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:07:29,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902441398] [2022-11-20 11:07:29,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:29,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:07:29,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:29,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:07:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:07:29,899 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:29,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:29,987 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-11-20 11:07:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:07:29,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:07:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:29,989 INFO L225 Difference]: With dead ends: 39 [2022-11-20 11:07:29,989 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 11:07:29,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:07:29,991 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 42 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:29,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 62 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 11:07:29,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-20 11:07:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.36) internal successors, (34), 30 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:07:30,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-11-20 11:07:30,000 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 11 [2022-11-20 11:07:30,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:30,001 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-11-20 11:07:30,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:30,002 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-11-20 11:07:30,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:07:30,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:30,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:30,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:07:30,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:30,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:30,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1233815644, now seen corresponding path program 1 times [2022-11-20 11:07:30,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:30,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347179584] [2022-11-20 11:07:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:30,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:30,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:30,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347179584] [2022-11-20 11:07:30,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347179584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:30,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:30,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:07:30,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598785283] [2022-11-20 11:07:30,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:30,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:07:30,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:30,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:07:30,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:07:30,123 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:30,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:30,220 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2022-11-20 11:07:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:07:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 11:07:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:30,223 INFO L225 Difference]: With dead ends: 59 [2022-11-20 11:07:30,225 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 11:07:30,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:07:30,229 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:30,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 128 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 11:07:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2022-11-20 11:07:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 38 states have internal predecessors, (44), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 11:07:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-11-20 11:07:30,249 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 12 [2022-11-20 11:07:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:30,250 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-11-20 11:07:30,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:30,252 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-11-20 11:07:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:07:30,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:30,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:30,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:07:30,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:30,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:30,256 INFO L85 PathProgramCache]: Analyzing trace with hash 932280239, now seen corresponding path program 1 times [2022-11-20 11:07:30,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:30,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120751038] [2022-11-20 11:07:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:30,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:30,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:30,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120751038] [2022-11-20 11:07:30,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120751038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:30,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739043230] [2022-11-20 11:07:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:30,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:30,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:30,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:30,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:07:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:30,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:07:30,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:30,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:30,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739043230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:30,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:07:30,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-20 11:07:30,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177082435] [2022-11-20 11:07:30,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:30,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:07:30,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:30,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:07:30,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:07:30,765 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 16 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:31,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:31,060 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2022-11-20 11:07:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:07:31,061 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 11:07:31,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:31,070 INFO L225 Difference]: With dead ends: 109 [2022-11-20 11:07:31,071 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 11:07:31,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:07:31,077 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 118 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:31,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 217 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:07:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 11:07:31,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2022-11-20 11:07:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 62 states have internal predecessors, (76), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 11:07:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2022-11-20 11:07:31,111 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 17 [2022-11-20 11:07:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:31,112 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2022-11-20 11:07:31,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2022-11-20 11:07:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:07:31,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:31,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:31,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:31,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:31,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:31,331 INFO L85 PathProgramCache]: Analyzing trace with hash -200724308, now seen corresponding path program 1 times [2022-11-20 11:07:31,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:31,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026972156] [2022-11-20 11:07:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:31,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:07:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:07:31,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:31,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026972156] [2022-11-20 11:07:31,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026972156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:31,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:31,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:31,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113025976] [2022-11-20 11:07:31,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:31,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:07:31,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:31,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:07:31,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:07:31,502 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:07:31,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:31,526 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2022-11-20 11:07:31,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:07:31,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-20 11:07:31,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:31,529 INFO L225 Difference]: With dead ends: 92 [2022-11-20 11:07:31,529 INFO L226 Difference]: Without dead ends: 90 [2022-11-20 11:07:31,529 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 [2022-11-20 11:07:31,531 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:31,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 79 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:07:31,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-20 11:07:31,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-20 11:07:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 72 states have internal predecessors, (87), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 11:07:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2022-11-20 11:07:31,543 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 24 [2022-11-20 11:07:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:31,544 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2022-11-20 11:07:31,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:07:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2022-11-20 11:07:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 11:07:31,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:31,545 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:31,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:07:31,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1199112428, now seen corresponding path program 1 times [2022-11-20 11:07:31,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:31,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682370957] [2022-11-20 11:07:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:31,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:07:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:07:31,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:31,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682370957] [2022-11-20 11:07:31,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682370957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:31,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:31,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:31,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057013581] [2022-11-20 11:07:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:31,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:07:31,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:07:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:07:31,634 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:07:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:31,654 INFO L93 Difference]: Finished difference Result 102 states and 119 transitions. [2022-11-20 11:07:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:07:31,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-20 11:07:31,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:31,656 INFO L225 Difference]: With dead ends: 102 [2022-11-20 11:07:31,656 INFO L226 Difference]: Without dead ends: 100 [2022-11-20 11:07:31,656 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 [2022-11-20 11:07:31,657 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:31,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 89 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:07:31,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-20 11:07:31,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-20 11:07:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.25) internal successors, (95), 80 states have internal predecessors, (95), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (12), 12 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 11:07:31,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2022-11-20 11:07:31,673 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 29 [2022-11-20 11:07:31,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:31,674 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2022-11-20 11:07:31,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:07:31,680 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2022-11-20 11:07:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 11:07:31,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:31,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:31,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:07:31,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1006302115, now seen corresponding path program 1 times [2022-11-20 11:07:31,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:31,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725684013] [2022-11-20 11:07:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:31,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:07:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:07:31,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:31,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725684013] [2022-11-20 11:07:31,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725684013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:31,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:31,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:07:31,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071385931] [2022-11-20 11:07:31,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:31,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:07:31,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:31,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:07:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:07:31,855 INFO L87 Difference]: Start difference. First operand 100 states and 115 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, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:07:31,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:31,902 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2022-11-20 11:07:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:07:31,902 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, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-11-20 11:07:31,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:31,903 INFO L225 Difference]: With dead ends: 116 [2022-11-20 11:07:31,904 INFO L226 Difference]: Without dead ends: 115 [2022-11-20 11:07:31,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:07:31,906 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:31,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 113 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:07:31,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-20 11:07:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2022-11-20 11:07:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 85 states have (on average 1.223529411764706) internal successors, (104), 89 states have internal predecessors, (104), 8 states have call successors, (8), 7 states have call predecessors, (8), 13 states have return successors, (15), 15 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-20 11:07:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2022-11-20 11:07:31,931 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 29 [2022-11-20 11:07:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:31,932 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2022-11-20 11:07:31,932 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, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:07:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2022-11-20 11:07:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:07:31,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:31,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:31,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:07:31,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting id2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:31,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:31,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1130594537, now seen corresponding path program 1 times [2022-11-20 11:07:31,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:31,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34276480] [2022-11-20 11:07:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:31,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:07:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:07:31,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:31,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34276480] [2022-11-20 11:07:31,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34276480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:31,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:31,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:07:31,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247692437] [2022-11-20 11:07:31,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:31,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:07:31,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:31,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:07:31,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:07:31,985 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:07:31,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:31,995 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2022-11-20 11:07:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:07:31,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-11-20 11:07:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:31,997 INFO L225 Difference]: With dead ends: 112 [2022-11-20 11:07:31,997 INFO L226 Difference]: Without dead ends: 111 [2022-11-20 11:07:31,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:07:31,998 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:31,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:07:31,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-20 11:07:32,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2022-11-20 11:07:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 80 states have internal predecessors, (93), 8 states have call successors, (8), 7 states have call predecessors, (8), 11 states have return successors, (13), 13 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-20 11:07:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2022-11-20 11:07:32,008 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 30 [2022-11-20 11:07:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:32,009 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2022-11-20 11:07:32,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:07:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2022-11-20 11:07:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 11:07:32,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:32,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-20 11:07:32,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:07:32,011 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash -654535444, now seen corresponding path program 1 times [2022-11-20 11:07:32,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:32,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829362388] [2022-11-20 11:07:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:32,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:32,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829362388] [2022-11-20 11:07:32,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829362388] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111075847] [2022-11-20 11:07:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:32,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:32,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:32,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:32,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:07:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:32,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:07:32,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:32,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:32,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111075847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:32,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:07:32,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-11-20 11:07:32,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37072399] [2022-11-20 11:07:32,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:32,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:07:32,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:32,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:07:32,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:07:32,701 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand has 28 states, 25 states have (on average 2.04) internal successors, (51), 16 states have internal predecessors, (51), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:33,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:33,328 INFO L93 Difference]: Finished difference Result 251 states and 270 transitions. [2022-11-20 11:07:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:07:33,330 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.04) internal successors, (51), 16 states have internal predecessors, (51), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-20 11:07:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:33,331 INFO L225 Difference]: With dead ends: 251 [2022-11-20 11:07:33,331 INFO L226 Difference]: Without dead ends: 217 [2022-11-20 11:07:33,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=1661, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 11:07:33,333 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 296 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:33,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 447 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:07:33,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-20 11:07:33,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 193. [2022-11-20 11:07:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 150 states have (on average 1.2066666666666668) internal successors, (181), 153 states have internal predecessors, (181), 15 states have call successors, (15), 14 states have call predecessors, (15), 23 states have return successors, (25), 25 states have call predecessors, (25), 14 states have call successors, (25) [2022-11-20 11:07:33,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 221 transitions. [2022-11-20 11:07:33,348 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 221 transitions. Word has length 32 [2022-11-20 11:07:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:33,348 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 221 transitions. [2022-11-20 11:07:33,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.04) internal successors, (51), 16 states have internal predecessors, (51), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 221 transitions. [2022-11-20 11:07:33,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:07:33,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:33,350 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:33,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:33,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:33,555 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash -169519029, now seen corresponding path program 1 times [2022-11-20 11:07:33,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:33,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065418106] [2022-11-20 11:07:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:33,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:33,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:07:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:33,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 11:07:33,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:33,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065418106] [2022-11-20 11:07:33,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065418106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:33,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:33,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:07:33,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537593959] [2022-11-20 11:07:33,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:33,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:07:33,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:07:33,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:07:33,663 INFO L87 Difference]: Start difference. First operand 193 states and 221 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, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:07:33,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:33,700 INFO L93 Difference]: Finished difference Result 242 states and 280 transitions. [2022-11-20 11:07:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:07:33,701 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, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-11-20 11:07:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:33,704 INFO L225 Difference]: With dead ends: 242 [2022-11-20 11:07:33,704 INFO L226 Difference]: Without dead ends: 241 [2022-11-20 11:07:33,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:07:33,705 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:33,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 132 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:07:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-20 11:07:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 236. [2022-11-20 11:07:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 184 states have (on average 1.1684782608695652) internal successors, (215), 186 states have internal predecessors, (215), 15 states have call successors, (15), 14 states have call predecessors, (15), 32 states have return successors, (35), 35 states have call predecessors, (35), 14 states have call successors, (35) [2022-11-20 11:07:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 265 transitions. [2022-11-20 11:07:33,728 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 265 transitions. Word has length 44 [2022-11-20 11:07:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:33,730 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 265 transitions. [2022-11-20 11:07:33,730 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, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:07:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 265 transitions. [2022-11-20 11:07:33,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:07:33,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:33,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:33,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:07:33,740 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:33,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:33,740 INFO L85 PathProgramCache]: Analyzing trace with hash -686718988, now seen corresponding path program 1 times [2022-11-20 11:07:33,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:33,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095713563] [2022-11-20 11:07:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:33,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:07:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:07:33,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:33,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095713563] [2022-11-20 11:07:33,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095713563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:33,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43351669] [2022-11-20 11:07:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:33,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:33,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:33,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:33,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:07:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:34,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:07:34,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:07:34,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:07:34,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43351669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:34,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:07:34,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 11:07:34,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989442892] [2022-11-20 11:07:34,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:34,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:07:34,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:34,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:07:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:07:34,366 INFO L87 Difference]: Start difference. First operand 236 states and 265 transitions. Second operand has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 11:07:34,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:34,451 INFO L93 Difference]: Finished difference Result 335 states and 389 transitions. [2022-11-20 11:07:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:07:34,452 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2022-11-20 11:07:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:34,456 INFO L225 Difference]: With dead ends: 335 [2022-11-20 11:07:34,456 INFO L226 Difference]: Without dead ends: 333 [2022-11-20 11:07:34,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:07:34,459 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:34,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 215 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-20 11:07:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 290. [2022-11-20 11:07:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 228 states have (on average 1.162280701754386) internal successors, (265), 230 states have internal predecessors, (265), 15 states have call successors, (15), 14 states have call predecessors, (15), 42 states have return successors, (45), 45 states have call predecessors, (45), 14 states have call successors, (45) [2022-11-20 11:07:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 325 transitions. [2022-11-20 11:07:34,481 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 325 transitions. Word has length 44 [2022-11-20 11:07:34,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:34,481 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 325 transitions. [2022-11-20 11:07:34,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 11:07:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 325 transitions. [2022-11-20 11:07:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:07:34,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:34,486 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:34,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 11:07:34,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:34,692 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:34,692 INFO L85 PathProgramCache]: Analyzing trace with hash -960122528, now seen corresponding path program 1 times [2022-11-20 11:07:34,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:34,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324267022] [2022-11-20 11:07:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:34,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:34,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:07:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:34,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 11:07:34,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:34,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324267022] [2022-11-20 11:07:34,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324267022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:34,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:34,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:07:34,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689139201] [2022-11-20 11:07:34,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:34,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:07:34,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:07:34,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:07:34,732 INFO L87 Difference]: Start difference. First operand 290 states and 325 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:07:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:34,749 INFO L93 Difference]: Finished difference Result 290 states and 325 transitions. [2022-11-20 11:07:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:07:34,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-11-20 11:07:34,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:34,751 INFO L225 Difference]: With dead ends: 290 [2022-11-20 11:07:34,752 INFO L226 Difference]: Without dead ends: 264 [2022-11-20 11:07:34,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:07:34,755 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:34,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:07:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-20 11:07:34,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-11-20 11:07:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 208 states have (on average 1.1105769230769231) internal successors, (231), 209 states have internal predecessors, (231), 15 states have call successors, (15), 14 states have call predecessors, (15), 37 states have return successors, (40), 40 states have call predecessors, (40), 14 states have call successors, (40) [2022-11-20 11:07:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 286 transitions. [2022-11-20 11:07:34,775 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 286 transitions. Word has length 45 [2022-11-20 11:07:34,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:34,776 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 286 transitions. [2022-11-20 11:07:34,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:07:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 286 transitions. [2022-11-20 11:07:34,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 11:07:34,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:34,779 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 11:07:34,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:07:34,779 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1262939008, now seen corresponding path program 1 times [2022-11-20 11:07:34,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:34,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932451380] [2022-11-20 11:07:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:34,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:07:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:35,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:07:35,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:35,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932451380] [2022-11-20 11:07:35,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932451380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:35,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383845961] [2022-11-20 11:07:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:35,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:35,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:35,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:35,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:07:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:35,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:07:35,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:35,563 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:07:35,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:07:36,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383845961] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:36,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:07:36,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 17] total 23 [2022-11-20 11:07:36,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138031182] [2022-11-20 11:07:36,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:36,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:07:36,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:07:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:07:36,572 INFO L87 Difference]: Start difference. First operand 264 states and 286 transitions. Second operand has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (13), 5 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 11:07:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:36,848 INFO L93 Difference]: Finished difference Result 451 states and 488 transitions. [2022-11-20 11:07:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:07:36,848 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (13), 5 states have call predecessors, (13), 9 states have call successors, (13) Word has length 59 [2022-11-20 11:07:36,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:36,850 INFO L225 Difference]: With dead ends: 451 [2022-11-20 11:07:36,850 INFO L226 Difference]: Without dead ends: 264 [2022-11-20 11:07:36,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 107 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:07:36,852 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 105 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:36,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 209 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-20 11:07:36,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-11-20 11:07:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 208 states have (on average 1.0913461538461537) internal successors, (227), 209 states have internal predecessors, (227), 15 states have call successors, (15), 14 states have call predecessors, (15), 37 states have return successors, (40), 40 states have call predecessors, (40), 14 states have call successors, (40) [2022-11-20 11:07:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 282 transitions. [2022-11-20 11:07:36,865 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 282 transitions. Word has length 59 [2022-11-20 11:07:36,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:36,866 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 282 transitions. [2022-11-20 11:07:36,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (13), 5 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 11:07:36,866 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 282 transitions. [2022-11-20 11:07:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:07:36,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:36,867 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1] [2022-11-20 11:07:36,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:37,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:07:37,073 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:37,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:37,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1015007109, now seen corresponding path program 2 times [2022-11-20 11:07:37,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:37,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131813821] [2022-11-20 11:07:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:37,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:37,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:37,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131813821] [2022-11-20 11:07:37,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131813821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:37,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254558013] [2022-11-20 11:07:37,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:07:37,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:37,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:37,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:37,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:07:37,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:07:37,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:37,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:07:37,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:37,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:38,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254558013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:38,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:07:38,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2022-11-20 11:07:38,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832650064] [2022-11-20 11:07:38,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-20 11:07:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-20 11:07:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2022-11-20 11:07:38,701 INFO L87 Difference]: Start difference. First operand 264 states and 282 transitions. Second operand has 56 states, 53 states have (on average 2.018867924528302) internal successors, (107), 30 states have internal predecessors, (107), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:40,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:40,069 INFO L93 Difference]: Finished difference Result 577 states and 601 transitions. [2022-11-20 11:07:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-20 11:07:40,070 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.018867924528302) internal successors, (107), 30 states have internal predecessors, (107), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-20 11:07:40,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:40,072 INFO L225 Difference]: With dead ends: 577 [2022-11-20 11:07:40,072 INFO L226 Difference]: Without dead ends: 575 [2022-11-20 11:07:40,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2143 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1231, Invalid=6779, Unknown=0, NotChecked=0, Total=8010 [2022-11-20 11:07:40,077 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 945 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:40,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 515 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:07:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-20 11:07:40,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 550. [2022-11-20 11:07:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 436 states have (on average 1.0871559633027523) internal successors, (474), 436 states have internal predecessors, (474), 28 states have call successors, (28), 27 states have call predecessors, (28), 82 states have return successors, (86), 86 states have call predecessors, (86), 27 states have call successors, (86) [2022-11-20 11:07:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 588 transitions. [2022-11-20 11:07:40,103 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 588 transitions. Word has length 67 [2022-11-20 11:07:40,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:40,104 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 588 transitions. [2022-11-20 11:07:40,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.018867924528302) internal successors, (107), 30 states have internal predecessors, (107), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 588 transitions. [2022-11-20 11:07:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 11:07:40,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:40,105 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 11:07:40,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:40,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:07:40,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:40,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:40,312 INFO L85 PathProgramCache]: Analyzing trace with hash -281451757, now seen corresponding path program 1 times [2022-11-20 11:07:40,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:40,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275478807] [2022-11-20 11:07:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:40,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:07:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:40,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:07:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-20 11:07:40,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:40,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275478807] [2022-11-20 11:07:40,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275478807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:40,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748563913] [2022-11-20 11:07:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:40,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:40,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:40,804 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:40,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:07:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:40,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:07:40,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 28 proven. 27 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:07:41,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 28 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:07:43,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748563913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:43,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:07:43,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 19] total 38 [2022-11-20 11:07:43,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860729702] [2022-11-20 11:07:43,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:43,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 11:07:43,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 11:07:43,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1292, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 11:07:43,012 INFO L87 Difference]: Start difference. First operand 550 states and 588 transitions. Second operand has 38 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 14 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-20 11:07:43,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:43,736 INFO L93 Difference]: Finished difference Result 589 states and 627 transitions. [2022-11-20 11:07:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:07:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 14 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) Word has length 69 [2022-11-20 11:07:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:43,738 INFO L225 Difference]: With dead ends: 589 [2022-11-20 11:07:43,738 INFO L226 Difference]: Without dead ends: 140 [2022-11-20 11:07:43,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 121 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=301, Invalid=2249, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 11:07:43,741 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 180 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:43,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 163 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:07:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-20 11:07:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2022-11-20 11:07:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 110 states have (on average 1.018181818181818) internal successors, (112), 111 states have internal predecessors, (112), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2022-11-20 11:07:43,752 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 69 [2022-11-20 11:07:43,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:43,752 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2022-11-20 11:07:43,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 14 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-20 11:07:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2022-11-20 11:07:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 11:07:43,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:43,754 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1] [2022-11-20 11:07:43,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:43,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:07:43,960 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:43,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash -4433068, now seen corresponding path program 2 times [2022-11-20 11:07:43,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:43,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018281042] [2022-11-20 11:07:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:43,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:45,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:45,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018281042] [2022-11-20 11:07:45,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018281042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:45,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474837329] [2022-11-20 11:07:45,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:07:45,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:45,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:45,695 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:45,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:07:45,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:07:45,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:45,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-20 11:07:45,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:46,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:48,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474837329] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:48,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:07:48,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2022-11-20 11:07:48,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528789632] [2022-11-20 11:07:48,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:48,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-11-20 11:07:48,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-11-20 11:07:48,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2022-11-20 11:07:48,428 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand has 108 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 56 states have internal predecessors, (211), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:50,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:50,979 INFO L93 Difference]: Finished difference Result 277 states and 302 transitions. [2022-11-20 11:07:50,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-11-20 11:07:50,979 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 56 states have internal predecessors, (211), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-20 11:07:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:50,982 INFO L225 Difference]: With dead ends: 277 [2022-11-20 11:07:50,982 INFO L226 Difference]: Without dead ends: 275 [2022-11-20 11:07:50,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2022-11-20 11:07:50,992 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 639 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:50,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 74 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:07:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-20 11:07:51,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 274. [2022-11-20 11:07:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 218 states have (on average 1.0091743119266054) internal successors, (220), 219 states have internal predecessors, (220), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2022-11-20 11:07:51,019 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 132 [2022-11-20 11:07:51,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:51,020 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2022-11-20 11:07:51,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 56 states have internal predecessors, (211), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2022-11-20 11:07:51,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-20 11:07:51,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:51,024 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1] [2022-11-20 11:07:51,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:07:51,230 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:07:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:51,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2041066069, now seen corresponding path program 3 times [2022-11-20 11:07:51,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:51,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46406634] [2022-11-20 11:07:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:51,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 0 proven. 3354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:57,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:57,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46406634] [2022-11-20 11:07:57,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46406634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:57,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063565105] [2022-11-20 11:07:57,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:07:57,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:57,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:57,555 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:57,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:07:57,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2022-11-20 11:07:57,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:57,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-20 11:07:57,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 0 proven. 3354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:58,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 0 proven. 3354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:06,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063565105] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:06,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:08:06,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 215 [2022-11-20 11:08:06,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280676015] [2022-11-20 11:08:06,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:06,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2022-11-20 11:08:06,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:08:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2022-11-20 11:08:06,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2022-11-20 11:08:06,252 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand has 216 states, 213 states have (on average 2.004694835680751) internal successors, (427), 110 states have internal predecessors, (427), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:14,203 INFO L93 Difference]: Finished difference Result 542 states and 593 transitions. [2022-11-20 11:08:14,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-11-20 11:08:14,205 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 213 states have (on average 2.004694835680751) internal successors, (427), 110 states have internal predecessors, (427), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2022-11-20 11:08:14,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:14,207 INFO L225 Difference]: With dead ends: 542 [2022-11-20 11:08:14,208 INFO L226 Difference]: Without dead ends: 540 [2022-11-20 11:08:14,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2022-11-20 11:08:14,219 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1612 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:14,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 74 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 11:08:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-20 11:08:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 539. [2022-11-20 11:08:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 430 states have (on average 1.0046511627906978) internal successors, (432), 431 states have internal predecessors, (432), 107 states have call successors, (107), 107 states have call predecessors, (107), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 539 transitions. [2022-11-20 11:08:14,256 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 539 transitions. Word has length 267 [2022-11-20 11:08:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:14,257 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 539 transitions. [2022-11-20 11:08:14,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 213 states have (on average 2.004694835680751) internal successors, (427), 110 states have internal predecessors, (427), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 539 transitions. [2022-11-20 11:08:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-11-20 11:08:14,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:14,271 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 1, 1, 1, 1] [2022-11-20 11:08:14,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:14,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:08:14,477 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-20 11:08:14,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash 752102644, now seen corresponding path program 3 times [2022-11-20 11:08:14,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:08:14,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336116940] [2022-11-20 11:08:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:14,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:08:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 13728 backedges. 0 proven. 13728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:38,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:08:38,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336116940] [2022-11-20 11:08:38,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336116940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:08:38,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417332049] [2022-11-20 11:08:38,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:08:38,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:08:38,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:08:38,006 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:08:38,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:08:38,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2022-11-20 11:08:38,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:38,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:08:38,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13728 backedges. 1354 proven. 24 refuted. 0 times theorem prover too weak. 12350 trivial. 0 not checked. [2022-11-20 11:08:39,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 13728 backedges. 1354 proven. 24 refuted. 0 times theorem prover too weak. 12350 trivial. 0 not checked. [2022-11-20 11:08:39,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417332049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:39,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:08:39,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 15, 15] total 228 [2022-11-20 11:08:39,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140010702] [2022-11-20 11:08:39,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:39,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 228 states [2022-11-20 11:08:39,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:08:39,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2022-11-20 11:08:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6590, Invalid=45166, Unknown=0, NotChecked=0, Total=51756 [2022-11-20 11:08:39,430 INFO L87 Difference]: Start difference. First operand 539 states and 539 transitions. Second operand has 228 states, 226 states have (on average 2.0265486725663715) internal successors, (458), 116 states have internal predecessors, (458), 113 states have call successors, (114), 113 states have call predecessors, (114), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:39,996 INFO L93 Difference]: Finished difference Result 539 states and 539 transitions. [2022-11-20 11:08:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:08:39,996 INFO L78 Accepts]: Start accepts. Automaton has has 228 states, 226 states have (on average 2.0265486725663715) internal successors, (458), 116 states have internal predecessors, (458), 113 states have call successors, (114), 113 states have call predecessors, (114), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 532 [2022-11-20 11:08:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:39,997 INFO L225 Difference]: With dead ends: 539 [2022-11-20 11:08:39,997 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:08:40,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1282 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19687 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=7238, Invalid=47284, Unknown=0, NotChecked=0, Total=54522 [2022-11-20 11:08:40,001 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 107 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:40,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 50 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:08:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:08:40,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:08:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:08:40,002 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 532 [2022-11-20 11:08:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:40,002 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:08:40,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 228 states, 226 states have (on average 2.0265486725663715) internal successors, (458), 116 states have internal predecessors, (458), 113 states have call successors, (114), 113 states have call predecessors, (114), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:08:40,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:08:40,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-20 11:08:40,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-20 11:08:40,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-20 11:08:40,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location id2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-20 11:08:40,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-20 11:08:40,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-20 11:08:40,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-20 11:08:40,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-20 11:08:40,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:40,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:08:40,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:08:40,387 INFO L899 garLoopResultBuilder]: For program point id2FINAL(lines 14 17) no Hoare annotation was computed. [2022-11-20 11:08:40,387 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-11-20 11:08:40,387 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-11-20 11:08:40,388 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2022-11-20 11:08:40,388 INFO L895 garLoopResultBuilder]: At program point L16-2(line 16) the Hoare annotation is: (let ((.cse0 (= id2_~x |id2_#in~x|))) (and (or (not (= 2 |id2_#in~x|)) .cse0) (or (not (<= |id2_#in~x| 4)) (not (<= 4 |id2_#in~x|)) .cse0) (not (= |id2_#in~x| 0)))) [2022-11-20 11:08:40,388 INFO L899 garLoopResultBuilder]: For program point L16-3(line 16) no Hoare annotation was computed. [2022-11-20 11:08:40,388 INFO L899 garLoopResultBuilder]: For program point L16-4(line 16) no Hoare annotation was computed. [2022-11-20 11:08:40,388 INFO L899 garLoopResultBuilder]: For program point L16-5(line 16) no Hoare annotation was computed. [2022-11-20 11:08:40,388 INFO L899 garLoopResultBuilder]: For program point id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2022-11-20 11:08:40,388 INFO L899 garLoopResultBuilder]: For program point id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2022-11-20 11:08:40,389 INFO L899 garLoopResultBuilder]: For program point id2EXIT(lines 14 17) no Hoare annotation was computed. [2022-11-20 11:08:40,389 INFO L899 garLoopResultBuilder]: For program point id2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2022-11-20 11:08:40,389 INFO L902 garLoopResultBuilder]: At program point id2ENTRY(lines 14 17) the Hoare annotation is: true [2022-11-20 11:08:40,389 INFO L899 garLoopResultBuilder]: For program point id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2022-11-20 11:08:40,389 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:08:40,389 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:08:40,389 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:08:40,389 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:08:40,389 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-11-20 11:08:40,389 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 24) no Hoare annotation was computed. [2022-11-20 11:08:40,389 INFO L895 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (= 5 |ULTIMATE.start_main_~input~0#1|) [2022-11-20 11:08:40,390 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2022-11-20 11:08:40,390 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 25) no Hoare annotation was computed. [2022-11-20 11:08:40,390 INFO L899 garLoopResultBuilder]: For program point idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2022-11-20 11:08:40,390 INFO L899 garLoopResultBuilder]: For program point idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2022-11-20 11:08:40,390 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 9 12) no Hoare annotation was computed. [2022-11-20 11:08:40,390 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 9 12) no Hoare annotation was computed. [2022-11-20 11:08:40,390 INFO L902 garLoopResultBuilder]: At program point idENTRY(lines 9 12) the Hoare annotation is: true [2022-11-20 11:08:40,390 INFO L899 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2022-11-20 11:08:40,390 INFO L899 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2022-11-20 11:08:40,390 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-11-20 11:08:40,390 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-11-20 11:08:40,391 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-11-20 11:08:40,391 INFO L895 garLoopResultBuilder]: At program point L11-2(line 11) the Hoare annotation is: (and (or (not (= |id_#in~x| 3)) (= 3 id_~x)) (or (= id_~x 1) (not (= |id_#in~x| 1))) (or (= 5 id_~x) (not (= 5 |id_#in~x|)))) [2022-11-20 11:08:40,391 INFO L899 garLoopResultBuilder]: For program point L11-3(line 11) no Hoare annotation was computed. [2022-11-20 11:08:40,391 INFO L899 garLoopResultBuilder]: For program point L11-4(line 11) no Hoare annotation was computed. [2022-11-20 11:08:40,391 INFO L899 garLoopResultBuilder]: For program point L11-5(line 11) no Hoare annotation was computed. [2022-11-20 11:08:40,396 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:40,399 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:08:40,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:08:40 BoogieIcfgContainer [2022-11-20 11:08:40,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:08:40,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:08:40,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:08:40,405 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:08:40,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:29" (3/4) ... [2022-11-20 11:08:40,408 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:08:40,415 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2022-11-20 11:08:40,415 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2022-11-20 11:08:40,423 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-20 11:08:40,423 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:08:40,423 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:08:40,423 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:08:40,469 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:08:40,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:08:40,469 INFO L158 Benchmark]: Toolchain (without parser) took 72160.92ms. Allocated memory was 184.5MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 141.1MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2022-11-20 11:08:40,470 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:08:40,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.78ms. Allocated memory is still 184.5MB. Free memory was 140.6MB in the beginning and 130.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:08:40,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.26ms. Allocated memory is still 184.5MB. Free memory was 130.6MB in the beginning and 129.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:08:40,471 INFO L158 Benchmark]: Boogie Preprocessor took 21.62ms. Allocated memory is still 184.5MB. Free memory was 129.3MB in the beginning and 128.4MB in the end (delta: 958.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:08:40,471 INFO L158 Benchmark]: RCFGBuilder took 424.99ms. Allocated memory is still 184.5MB. Free memory was 128.4MB in the beginning and 117.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:08:40,477 INFO L158 Benchmark]: TraceAbstraction took 71373.28ms. Allocated memory was 184.5MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 116.9MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2022-11-20 11:08:40,477 INFO L158 Benchmark]: Witness Printer took 64.63ms. Allocated memory is still 1.4GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:08:40,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.78ms. Allocated memory is still 184.5MB. Free memory was 140.6MB in the beginning and 130.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.26ms. Allocated memory is still 184.5MB. Free memory was 130.6MB in the beginning and 129.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.62ms. Allocated memory is still 184.5MB. Free memory was 129.3MB in the beginning and 128.4MB in the end (delta: 958.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 424.99ms. Allocated memory is still 184.5MB. Free memory was 128.4MB in the beginning and 117.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 71373.28ms. Allocated memory was 184.5MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 116.9MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Witness Printer took 64.63ms. Allocated memory is still 1.4GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 37 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 71.2s, OverallIterations: 19, TraceHistogramMax: 53, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4134 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4127 mSDsluCounter, 2902 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2452 mSDsCounter, 497 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4472 IncrementalHoareTripleChecker+Invalid, 4969 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 497 mSolverCounterUnsat, 450 mSDtfsCounter, 4472 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3214 GetRequests, 2211 SyntacticMatches, 16 SemanticMatches, 987 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63148 ImplicationChecksByTransitivity, 40.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=550occurred in iteration=15, InterpolantAutomatonStates: 548, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 140 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 215 PreInvPairs, 215 NumberOfFragments, 55 HoareAnnotationTreeSize, 215 FomulaSimplifications, 154 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 92 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 51.8s InterpolantComputationTime, 2675 NumberOfCodeBlocks, 2425 NumberOfCodeBlocksAsserted, 83 NumberOfCheckSat, 3857 ConstructedInterpolants, 0 QuantifiedInterpolants, 12543 SizeOfPredicates, 122 NumberOfNonLiveVariables, 1965 ConjunctsInSsa, 280 ConjunctsInUnsatCore, 37 InterpolantComputations, 10 PerfectInterpolantSequences, 27804/54758 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:08:40,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a75526c-bc6e-4165-ab7f-7bf806b84f0f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE