./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec.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_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/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_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/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_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/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 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a --- 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 12:04:28,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:04:28,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:04:28,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:04:28,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:04:28,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:04:28,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:04:28,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:04:28,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:04:28,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:04:28,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:04:28,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:04:28,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:04:28,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:04:28,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:04:28,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:04:28,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:04:28,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:04:28,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:04:28,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:04:28,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:04:28,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:04:28,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:04:28,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:04:28,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:04:28,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:04:28,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:04:28,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:04:28,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:04:28,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:04:28,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:04:28,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:04:28,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:04:28,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:04:28,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:04:28,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:04:28,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:04:28,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:04:28,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:04:28,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:04:28,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:04:28,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:04:28,245 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:04:28,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:04:28,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:04:28,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:04:28,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:04:28,248 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:04:28,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:04:28,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:04:28,250 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:04:28,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:04:28,252 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:04:28,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:04:28,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:04:28,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:04:28,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:04:28,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:04:28,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:04:28,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:04:28,254 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:04:28,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:04:28,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:04:28,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:04:28,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:04:28,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:04:28,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:04:28,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:04:28,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:28,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:04:28,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:04:28,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:04:28,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:04:28,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:04:28,259 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:04:28,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:04:28,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:04:28,259 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_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a [2022-11-20 12:04:28,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:04:28,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:04:28,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:04:28,618 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:04:28,618 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:04:28,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/verifythis/elimination_max_rec.c [2022-11-20 12:04:31,816 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:04:32,036 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:04:32,037 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/sv-benchmarks/c/verifythis/elimination_max_rec.c [2022-11-20 12:04:32,044 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/data/ae0358468/f07a8f39eeec4364aff4f23baa887c65/FLAG5da8ffc85 [2022-11-20 12:04:32,060 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/data/ae0358468/f07a8f39eeec4364aff4f23baa887c65 [2022-11-20 12:04:32,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:04:32,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:04:32,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:32,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:04:32,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:04:32,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a71163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32, skipping insertion in model container [2022-11-20 12:04:32,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:04:32,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:04:32,266 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_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2022-11-20 12:04:32,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:32,314 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:04:32,327 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_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2022-11-20 12:04:32,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:32,354 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:04:32,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32 WrapperNode [2022-11-20 12:04:32,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:32,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:04:32,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:04:32,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:04:32,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,402 INFO L138 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-11-20 12:04:32,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:04:32,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:04:32,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:04:32,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:04:32,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,427 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:04:32,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:04:32,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:04:32,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:04:32,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (1/1) ... [2022-11-20 12:04:32,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:32,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:32,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:04:32,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:04:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:04:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:04:32,529 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:04:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:04:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-11-20 12:04:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-11-20 12:04:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:04:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:04:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:04:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:04:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 12:04:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 12:04:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:04:32,670 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:04:32,672 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:04:32,896 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:04:32,912 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:04:32,912 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:04:32,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:32 BoogieIcfgContainer [2022-11-20 12:04:32,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:04:32,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:04:32,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:04:32,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:04:32,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:04:32" (1/3) ... [2022-11-20 12:04:32,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edd327b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:04:32, skipping insertion in model container [2022-11-20 12:04:32,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:32" (2/3) ... [2022-11-20 12:04:32,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edd327b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:04:32, skipping insertion in model container [2022-11-20 12:04:32,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:32" (3/3) ... [2022-11-20 12:04:32,931 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2022-11-20 12:04:32,956 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:04:32,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 12:04:33,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:04:33,029 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;@6a1b9320, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:04:33,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-20 12:04:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:04:33,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:04:33,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:33,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:33,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:04:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2040282141, now seen corresponding path program 1 times [2022-11-20 12:04:33,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:33,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253415062] [2022-11-20 12:04:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:33,330 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 12:04:33,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:33,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253415062] [2022-11-20 12:04:33,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253415062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:33,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:33,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564624938] [2022-11-20 12:04:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:33,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:04:33,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:33,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:04:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:04:33,385 INFO L87 Difference]: Start difference. First operand has 43 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:04:33,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:33,442 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2022-11-20 12:04:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:04:33,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-20 12:04:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:33,467 INFO L225 Difference]: With dead ends: 83 [2022-11-20 12:04:33,467 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 12:04:33,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:04:33,477 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:33,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:04:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 12:04:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-20 12:04:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 26 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-11-20 12:04:33,517 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 10 [2022-11-20 12:04:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:33,518 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-11-20 12:04:33,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:04:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-11-20 12:04:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:04:33,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:33,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:33,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:04:33,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:04:33,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:33,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1983023839, now seen corresponding path program 1 times [2022-11-20 12:04:33,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:33,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535526679] [2022-11-20 12:04:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:33,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:33,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:33,703 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 12:04:33,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:33,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535526679] [2022-11-20 12:04:33,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535526679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:33,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:33,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:33,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873247956] [2022-11-20 12:04:33,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:33,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:33,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:33,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:33,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:33,708 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:04:33,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:33,730 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-11-20 12:04:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:33,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-20 12:04:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:33,732 INFO L225 Difference]: With dead ends: 32 [2022-11-20 12:04:33,733 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 12:04:33,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:04:33,735 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:33,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:04:33,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 12:04:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-20 12:04:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.3) internal successors, (26), 25 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-11-20 12:04:33,743 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 10 [2022-11-20 12:04:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:33,743 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-11-20 12:04:33,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:04:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-11-20 12:04:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:04:33,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:33,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:33,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:04:33,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:04:33,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:33,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1344196825, now seen corresponding path program 1 times [2022-11-20 12:04:33,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:33,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425309063] [2022-11-20 12:04:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:33,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:33,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:33,924 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 12:04:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:33,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425309063] [2022-11-20 12:04:33,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425309063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:33,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:33,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:04:33,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629912057] [2022-11-20 12:04:33,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:33,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:04:33,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:33,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:04:33,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:04:33,928 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:04:33,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:33,975 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-11-20 12:04:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:04:33,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-20 12:04:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:33,977 INFO L225 Difference]: With dead ends: 31 [2022-11-20 12:04:33,978 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 12:04:33,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 12:04:33,980 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:33,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 92 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:04:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 12:04:33,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 12:04:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.25) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-11-20 12:04:33,987 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 11 [2022-11-20 12:04:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:33,988 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-11-20 12:04:33,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:04:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-11-20 12:04:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:04:33,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:33,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:33,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:04:33,990 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:04:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1678784910, now seen corresponding path program 1 times [2022-11-20 12:04:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:33,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781786290] [2022-11-20 12:04:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:04:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,123 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 12:04:34,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:34,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781786290] [2022-11-20 12:04:34,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781786290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:34,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:34,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:04:34,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93140421] [2022-11-20 12:04:34,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:34,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:04:34,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:34,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:04:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:04:34,126 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:34,191 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2022-11-20 12:04:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:04:34,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-20 12:04:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:34,193 INFO L225 Difference]: With dead ends: 45 [2022-11-20 12:04:34,194 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 12:04:34,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:04:34,196 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:34,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 100 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:04:34,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 12:04:34,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2022-11-20 12:04:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 32 states have internal predecessors, (36), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:04:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2022-11-20 12:04:34,207 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 22 [2022-11-20 12:04:34,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:34,208 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2022-11-20 12:04:34,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:34,209 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-11-20 12:04:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:04:34,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:34,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:34,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:04:34,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:04:34,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1678785102, now seen corresponding path program 1 times [2022-11-20 12:04:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:34,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576907548] [2022-11-20 12:04:34,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:34,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:04:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,341 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 12:04:34,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:34,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576907548] [2022-11-20 12:04:34,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576907548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:34,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:34,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:04:34,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886220428] [2022-11-20 12:04:34,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:34,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:34,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:34,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:34,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:34,353 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:34,450 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-20 12:04:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:04:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-20 12:04:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:34,452 INFO L225 Difference]: With dead ends: 40 [2022-11-20 12:04:34,452 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 12:04:34,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:04:34,454 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:34,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 69 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:04:34,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 12:04:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-20 12:04:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 31 states have internal predecessors, (34), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:04:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-20 12:04:34,462 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 22 [2022-11-20 12:04:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:34,463 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-20 12:04:34,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-20 12:04:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:04:34,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:34,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:34,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:04:34,465 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:04:34,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:34,466 INFO L85 PathProgramCache]: Analyzing trace with hash 502730683, now seen corresponding path program 1 times [2022-11-20 12:04:34,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:34,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377844246] [2022-11-20 12:04:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:34,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:04:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,601 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 12:04:34,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:34,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377844246] [2022-11-20 12:04:34,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377844246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:34,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:34,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:04:34,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644081421] [2022-11-20 12:04:34,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:34,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:04:34,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:34,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:04:34,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:04:34,604 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:34,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:34,711 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-11-20 12:04:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:04:34,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-20 12:04:34,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:34,715 INFO L225 Difference]: With dead ends: 41 [2022-11-20 12:04:34,715 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 12:04:34,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:04:34,716 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:34,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 118 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:04:34,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 12:04:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-11-20 12:04:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:04:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-11-20 12:04:34,724 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 23 [2022-11-20 12:04:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:34,724 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-11-20 12:04:34,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-11-20 12:04:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 12:04:34,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:34,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:34,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:04:34,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:04:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash -312082812, now seen corresponding path program 1 times [2022-11-20 12:04:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:34,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571854115] [2022-11-20 12:04:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:04:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:04:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:04:34,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:34,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571854115] [2022-11-20 12:04:34,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571854115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:04:34,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548771221] [2022-11-20 12:04:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:34,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:34,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:35,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:35,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:04:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:35,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:04:35,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:04:35,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:04:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:04:35,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548771221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:04:35,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:04:35,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-20 12:04:35,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583048380] [2022-11-20 12:04:35,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:04:35,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:04:35,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:35,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:04:35,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:04:35,397 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:04:35,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:35,720 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2022-11-20 12:04:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:04:35,721 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 34 [2022-11-20 12:04:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:35,729 INFO L225 Difference]: With dead ends: 80 [2022-11-20 12:04:35,729 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 12:04:35,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2022-11-20 12:04:35,733 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 92 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:35,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 220 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:04:35,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 12:04:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2022-11-20 12:04:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 54 states have internal predecessors, (64), 12 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:04:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2022-11-20 12:04:35,765 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 34 [2022-11-20 12:04:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:35,768 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2022-11-20 12:04:35,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:04:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2022-11-20 12:04:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 12:04:35,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:35,776 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:35,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:04:35,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:04:35,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:04:35,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:35,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1084632513, now seen corresponding path program 1 times [2022-11-20 12:04:35,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:35,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272024326] [2022-11-20 12:04:35,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:35,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:04:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:04:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:04:36,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:36,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272024326] [2022-11-20 12:04:36,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272024326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:04:36,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531847076] [2022-11-20 12:04:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:36,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:36,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:36,151 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:36,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:04:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:04:36,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:04:36,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:36,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531847076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:36,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:04:36,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-20 12:04:36,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418204759] [2022-11-20 12:04:36,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:36,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:04:36,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:04:36,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:04:36,345 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:04:36,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:36,490 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2022-11-20 12:04:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:04:36,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-11-20 12:04:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:36,493 INFO L225 Difference]: With dead ends: 69 [2022-11-20 12:04:36,493 INFO L226 Difference]: Without dead ends: 68 [2022-11-20 12:04:36,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:04:36,498 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 36 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:36,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 102 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:04:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-20 12:04:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-11-20 12:04:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.196078431372549) internal successors, (61), 53 states have internal predecessors, (61), 12 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:04:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2022-11-20 12:04:36,527 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 35 [2022-11-20 12:04:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:36,528 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2022-11-20 12:04:36,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:04:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2022-11-20 12:04:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 12:04:36,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:36,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:36,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:36,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:36,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:04:36,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:36,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1084626555, now seen corresponding path program 1 times [2022-11-20 12:04:36,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:36,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189607619] [2022-11-20 12:04:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:36,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:04:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:04:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:04:36,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:36,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189607619] [2022-11-20 12:04:36,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189607619] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:04:36,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658468271] [2022-11-20 12:04:36,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:36,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:36,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:36,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:36,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:04:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:37,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:04:37,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:04:37,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:04:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:04:37,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658468271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:04:37,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:04:37,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2022-11-20 12:04:37,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026719832] [2022-11-20 12:04:37,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:04:37,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:04:37,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:04:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:04:37,310 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 16 states have internal predecessors, (48), 9 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 12:04:37,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:37,615 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-11-20 12:04:37,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:04:37,616 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 16 states have internal predecessors, (48), 9 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 35 [2022-11-20 12:04:37,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:37,617 INFO L225 Difference]: With dead ends: 71 [2022-11-20 12:04:37,617 INFO L226 Difference]: Without dead ends: 70 [2022-11-20 12:04:37,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 12:04:37,620 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 78 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:37,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 207 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:04:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-20 12:04:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2022-11-20 12:04:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 12 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:04:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2022-11-20 12:04:37,644 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 35 [2022-11-20 12:04:37,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:37,645 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2022-11-20 12:04:37,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 16 states have internal predecessors, (48), 9 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 12:04:37,646 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2022-11-20 12:04:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 12:04:37,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:37,653 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:37,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:37,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:37,864 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:04:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1641727846, now seen corresponding path program 2 times [2022-11-20 12:04:37,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:37,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258760535] [2022-11-20 12:04:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:38,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:38,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:04:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:38,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:04:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:38,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:04:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:38,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:04:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:38,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 12:04:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 12:04:38,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:38,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258760535] [2022-11-20 12:04:38,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258760535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:04:38,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382683445] [2022-11-20 12:04:38,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:04:38,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:38,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:38,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:38,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:04:38,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:04:38,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:04:38,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:04:38,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-20 12:04:38,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:04:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-20 12:04:38,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382683445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:04:38,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:04:38,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2022-11-20 12:04:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796549096] [2022-11-20 12:04:38,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:04:38,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:04:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:38,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:04:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=868, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:04:38,995 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 25 states have internal predecessors, (76), 12 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:04:40,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:40,493 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2022-11-20 12:04:40,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 12:04:40,494 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 25 states have internal predecessors, (76), 12 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 70 [2022-11-20 12:04:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:40,495 INFO L225 Difference]: With dead ends: 83 [2022-11-20 12:04:40,495 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 12:04:40,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1111, Invalid=4001, Unknown=0, NotChecked=0, Total=5112 [2022-11-20 12:04:40,498 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 361 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:40,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 169 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:04:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 12:04:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 12:04:40,500 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 12:04:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 12:04:40,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2022-11-20 12:04:40,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:40,501 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:04:40,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 25 states have internal predecessors, (76), 12 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:04:40,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 12:04:40,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 12:04:40,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-20 12:04:40,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-20 12:04:40,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-20 12:04:40,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-20 12:04:40,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-20 12:04:40,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-20 12:04:40,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 12:04:40,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:04:40,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 12:04:41,640 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-20 12:04:41,641 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 12:04:41,641 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 12:04:41,641 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-20 12:04:41,641 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2022-11-20 12:04:41,641 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 12:04:41,641 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 12:04:41,642 INFO L902 garLoopResultBuilder]: At program point L49(lines 41 50) the Hoare annotation is: true [2022-11-20 12:04:41,642 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2022-11-20 12:04:41,642 INFO L899 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2022-11-20 12:04:41,642 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (<= |ULTIMATE.start_main_~n~0#1| 2147483647) [2022-11-20 12:04:41,642 INFO L895 garLoopResultBuilder]: At program point L46-2(line 46) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|)) [2022-11-20 12:04:41,643 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-11-20 12:04:41,643 INFO L899 garLoopResultBuilder]: For program point L46-3(line 46) no Hoare annotation was computed. [2022-11-20 12:04:41,643 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-20 12:04:41,643 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-20 12:04:41,643 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-11-20 12:04:41,643 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-20 12:04:41,643 INFO L899 garLoopResultBuilder]: For program point checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-20 12:04:41,643 INFO L902 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2022-11-20 12:04:41,643 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2022-11-20 12:04:41,644 INFO L902 garLoopResultBuilder]: At program point checkENTRY(lines 16 39) the Hoare annotation is: true [2022-11-20 12:04:41,644 INFO L899 garLoopResultBuilder]: For program point checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-11-20 12:04:41,644 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 26) no Hoare annotation was computed. [2022-11-20 12:04:41,644 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-11-20 12:04:41,644 INFO L899 garLoopResultBuilder]: For program point L25-2(line 25) no Hoare annotation was computed. [2022-11-20 12:04:41,648 INFO L895 garLoopResultBuilder]: At program point L25-4(lines 25 26) the Hoare annotation is: (let ((.cse5 (<= |check_#in~y| 2147483646))) (let ((.cse4 (<= check_~n 2147483647)) (.cse6 (<= 1 check_~y)) (.cse7 (<= 1 check_~x)) (.cse8 (<= check_~y 2147483646)) (.cse0 (not .cse5)) (.cse1 (not (<= 1 |check_#in~x|))) (.cse2 (not (<= |check_#in~n| 2147483647))) (.cse3 (not (<= 1 |check_#in~y|)))) (and (or .cse0 .cse1 .cse2 .cse3 (and .cse4 .cse5 .cse6 (< check_~x 2147483647) .cse7 .cse8)) (or .cse0 .cse1 (<= check_~x 2) .cse2 (not (<= |check_#in~x| 1)) .cse3) (or .cse0 .cse1 (<= check_~x 3) .cse2 .cse3 (not (<= |check_#in~x| 2))) (or .cse0 (not (= |check_#in~x| 0)) .cse2 (and .cse4 (= check_~x 0) (< 0 (+ check_~y 2147483648)) .cse8) (and .cse4 .cse5 .cse6 (<= check_~x 1) .cse7 .cse8)) (or .cse0 .cse1 .cse2 (<= check_~x 4) .cse3 (not (<= |check_#in~x| 3)))))) [2022-11-20 12:04:41,648 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-20 12:04:41,648 INFO L899 garLoopResultBuilder]: For program point checkFINAL(lines 16 39) no Hoare annotation was computed. [2022-11-20 12:04:41,648 INFO L902 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: true [2022-11-20 12:04:41,649 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2022-11-20 12:04:41,649 INFO L899 garLoopResultBuilder]: For program point checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-11-20 12:04:41,649 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-11-20 12:04:41,649 INFO L899 garLoopResultBuilder]: For program point checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-20 12:04:41,649 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-20 12:04:41,649 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-11-20 12:04:41,652 INFO L895 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (let ((.cse1 (not (<= 1 |check_#in~x|))) (.cse3 (not (<= 1 |check_#in~y|))) (.cse0 (not (<= |check_#in~y| 2147483646))) (.cse4 (<= check_~n 2147483647)) (.cse5 (<= check_~y 2147483646)) (.cse2 (not (<= |check_#in~n| 2147483647)))) (and (or .cse0 .cse1 .cse2 (not (<= |check_#in~x| 1)) .cse3 (<= check_~x 1)) (or .cse0 .cse1 .cse2 (<= check_~x 4) .cse3 (not (<= |check_#in~x| 4))) (or .cse0 .cse1 .cse2 .cse3 (and .cse4 (not (<= check_~y check_~x)) (<= 1 check_~x) .cse5)) (or .cse0 .cse1 (<= check_~x 3) .cse2 .cse3 (not (<= |check_#in~x| 3))) (or .cse0 .cse1 (<= check_~x 2) .cse2 .cse3 (not (<= |check_#in~x| 2))) (or .cse0 (and .cse4 (<= (+ check_~x 1) check_~y) (= check_~x 0) .cse5) (not (= |check_#in~x| 0)) .cse2))) [2022-11-20 12:04:41,653 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-20 12:04:41,653 INFO L899 garLoopResultBuilder]: For program point checkEXIT(lines 16 39) no Hoare annotation was computed. [2022-11-20 12:04:41,656 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2022-11-20 12:04:41,656 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-11-20 12:04:41,656 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2022-11-20 12:04:41,657 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2022-11-20 12:04:41,660 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:41,663 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:04:41,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:04:41 BoogieIcfgContainer [2022-11-20 12:04:41,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:04:41,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:04:41,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:04:41,675 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:04:41,676 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:32" (3/4) ... [2022-11-20 12:04:41,680 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:04:41,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 12:04:41,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2022-11-20 12:04:41,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 12:04:41,699 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-20 12:04:41,699 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 12:04:41,700 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 12:04:41,700 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:04:41,743 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:04:41,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:04:41,744 INFO L158 Benchmark]: Toolchain (without parser) took 9679.90ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 106.1MB in the beginning and 71.4MB in the end (delta: 34.7MB). Peak memory consumption was 111.7MB. Max. memory is 16.1GB. [2022-11-20 12:04:41,745 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 151.0MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:04:41,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.67ms. Allocated memory is still 151.0MB. Free memory was 105.8MB in the beginning and 95.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:04:41,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.43ms. Allocated memory is still 151.0MB. Free memory was 95.5MB in the beginning and 94.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:04:41,746 INFO L158 Benchmark]: Boogie Preprocessor took 26.67ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 92.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:04:41,746 INFO L158 Benchmark]: RCFGBuilder took 484.05ms. Allocated memory is still 151.0MB. Free memory was 92.9MB in the beginning and 80.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:04:41,747 INFO L158 Benchmark]: TraceAbstraction took 8755.83ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 79.7MB in the beginning and 74.5MB in the end (delta: 5.1MB). Peak memory consumption was 82.3MB. Max. memory is 16.1GB. [2022-11-20 12:04:41,747 INFO L158 Benchmark]: Witness Printer took 68.96ms. Allocated memory is still 226.5MB. Free memory was 74.5MB in the beginning and 71.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:04:41,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 151.0MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.67ms. Allocated memory is still 151.0MB. Free memory was 105.8MB in the beginning and 95.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.43ms. Allocated memory is still 151.0MB. Free memory was 95.5MB in the beginning and 94.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.67ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 92.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 484.05ms. Allocated memory is still 151.0MB. Free memory was 92.9MB in the beginning and 80.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8755.83ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 79.7MB in the beginning and 74.5MB in the end (delta: 5.1MB). Peak memory consumption was 82.3MB. Max. memory is 16.1GB. * Witness Printer took 68.96ms. Allocated memory is still 226.5MB. Free memory was 74.5MB in the beginning and 71.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: 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 4 procedures, 43 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 8.7s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 636 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 636 mSDsluCounter, 1175 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 908 mSDsCounter, 105 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 855 IncrementalHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 105 mSolverCounterUnsat, 267 mSDtfsCounter, 855 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 500 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=7, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 90 PreInvPairs, 144 NumberOfFragments, 328 HoareAnnotationTreeSize, 90 FomulaSimplifications, 78 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 2144 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 446 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 568 ConstructedInterpolants, 0 QuantifiedInterpolants, 1226 SizeOfPredicates, 25 NumberOfNonLiveVariables, 771 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 279/415 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 6 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 12:04:41,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_934ed4ae-8758-4dc9-a814-eac8a8d8a4e9/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