./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a 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_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc --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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- 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-5e519f3 [2022-11-02 20:13:43,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:13:43,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:13:43,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:13:43,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:13:43,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:13:43,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:13:43,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:13:43,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:13:43,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:13:43,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:13:43,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:13:43,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:13:43,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:13:43,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:13:43,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:13:43,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:13:43,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:13:43,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:13:43,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:13:43,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:13:43,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:13:43,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:13:43,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:13:43,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:13:43,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:13:43,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:13:43,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:13:43,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:13:43,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:13:43,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:13:43,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:13:43,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:13:43,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:13:43,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:13:43,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:13:43,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:13:43,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:13:43,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:13:43,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:13:43,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:13:43,238 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:13:43,282 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:13:43,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:13:43,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:13:43,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:13:43,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:13:43,284 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:13:43,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:13:43,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:13:43,286 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:13:43,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:13:43,287 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:13:43,288 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:13:43,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:13:43,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:13:43,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:13:43,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:13:43,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:13:43,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:13:43,289 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:13:43,289 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:13:43,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:13:43,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:13:43,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:13:43,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:13:43,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:13:43,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:13:43,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:43,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:13:43,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:13:43,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:13:43,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:13:43,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:13:43,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:13:43,295 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_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2022-11-02 20:13:43,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:13:43,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:13:43,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:13:43,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:13:43,633 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:13:43,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/queue_longer.i [2022-11-02 20:13:43,705 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/data/816970ea2/6beda79b33f449a5a4edb1c59b11989a/FLAGa963f4fbb [2022-11-02 20:13:44,257 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:13:44,257 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/sv-benchmarks/c/pthread/queue_longer.i [2022-11-02 20:13:44,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/data/816970ea2/6beda79b33f449a5a4edb1c59b11989a/FLAGa963f4fbb [2022-11-02 20:13:44,512 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/data/816970ea2/6beda79b33f449a5a4edb1c59b11989a [2022-11-02 20:13:44,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:13:44,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:13:44,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:44,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:13:44,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:13:44,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:44" (1/1) ... [2022-11-02 20:13:44,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed8a046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:44, skipping insertion in model container [2022-11-02 20:13:44,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:44" (1/1) ... [2022-11-02 20:13:44,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:13:44,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:13:45,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-02 20:13:45,349 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-02 20:13:45,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-02 20:13:45,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:45,385 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:13:45,433 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-02 20:13:45,435 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-02 20:13:45,438 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-02 20:13:45,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:45,505 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:13:45,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45 WrapperNode [2022-11-02 20:13:45,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:45,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:45,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:13:45,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:13:45,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,605 INFO L138 Inliner]: procedures = 274, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 261 [2022-11-02 20:13:45,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:45,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:13:45,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:13:45,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:13:45,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,676 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:13:45,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:13:45,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:13:45,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:13:45,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:45,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:45,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:13:45,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:13:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-02 20:13:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-02 20:13:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-02 20:13:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-02 20:13:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:13:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:13:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:13:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:13:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:13:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:13:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:13:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:13:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:13:45,798 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:13:46,014 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:13:46,027 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:13:46,602 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:13:46,613 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:13:46,613 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:13:46,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:46 BoogieIcfgContainer [2022-11-02 20:13:46,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:13:46,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:13:46,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:13:46,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:13:46,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:13:44" (1/3) ... [2022-11-02 20:13:46,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630049b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:13:46, skipping insertion in model container [2022-11-02 20:13:46,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (2/3) ... [2022-11-02 20:13:46,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630049b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:13:46, skipping insertion in model container [2022-11-02 20:13:46,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:46" (3/3) ... [2022-11-02 20:13:46,626 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2022-11-02 20:13:46,636 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:13:46,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:13:46,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-02 20:13:46,648 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:13:46,864 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:13:46,925 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:13:46,937 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 299 places, 307 transitions, 630 flow [2022-11-02 20:13:46,940 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 299 places, 307 transitions, 630 flow [2022-11-02 20:13:46,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 307 transitions, 630 flow [2022-11-02 20:13:47,130 INFO L130 PetriNetUnfolder]: 15/305 cut-off events. [2022-11-02 20:13:47,130 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:13:47,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 305 events. 15/305 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 467 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-11-02 20:13:47,157 INFO L118 LiptonReduction]: Number of co-enabled transitions 23276 [2022-11-02 20:14:05,088 INFO L133 LiptonReduction]: Checked pairs total: 46645 [2022-11-02 20:14:05,089 INFO L135 LiptonReduction]: Total number of compositions: 296 [2022-11-02 20:14:05,097 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 80 transitions, 176 flow [2022-11-02 20:14:05,212 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1882 states, 1792 states have (on average 2.8286830357142856) internal successors, (5069), 1881 states have internal predecessors, (5069), 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) [2022-11-02 20:14:05,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:14:05,239 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5569de90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:14:05,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-02 20:14:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 1882 states, 1792 states have (on average 2.8286830357142856) internal successors, (5069), 1881 states have internal predecessors, (5069), 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) [2022-11-02 20:14:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:14:05,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:05,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:14:05,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1483212470, now seen corresponding path program 1 times [2022-11-02 20:14:05,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:05,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793476006] [2022-11-02 20:14:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:05,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:06,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793476006] [2022-11-02 20:14:06,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793476006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:06,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:06,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:06,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647101132] [2022-11-02 20:14:06,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:06,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:06,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:06,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:06,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:06,900 INFO L87 Difference]: Start difference. First operand has 1882 states, 1792 states have (on average 2.8286830357142856) internal successors, (5069), 1881 states have internal predecessors, (5069), 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) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-02 20:14:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:07,520 INFO L93 Difference]: Finished difference Result 1880 states and 4939 transitions. [2022-11-02 20:14:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:14:07,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6 [2022-11-02 20:14:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:07,550 INFO L225 Difference]: With dead ends: 1880 [2022-11-02 20:14:07,550 INFO L226 Difference]: Without dead ends: 1880 [2022-11-02 20:14:07,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:07,554 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:07,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:14:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-11-02 20:14:07,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1880. [2022-11-02 20:14:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1790 states have (on average 2.7592178770949722) internal successors, (4939), 1879 states have internal predecessors, (4939), 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) [2022-11-02 20:14:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 4939 transitions. [2022-11-02 20:14:07,683 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 4939 transitions. Word has length 6 [2022-11-02 20:14:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:07,684 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 4939 transitions. [2022-11-02 20:14:07,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-02 20:14:07,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 4939 transitions. [2022-11-02 20:14:07,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:14:07,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:07,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:07,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:14:07,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:07,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1283302190, now seen corresponding path program 1 times [2022-11-02 20:14:07,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:07,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019967247] [2022-11-02 20:14:07,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:07,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:08,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:08,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019967247] [2022-11-02 20:14:08,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019967247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:08,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:08,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:14:08,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744818147] [2022-11-02 20:14:08,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:08,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:08,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:08,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:08,751 INFO L87 Difference]: Start difference. First operand 1880 states and 4939 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-02 20:14:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:09,431 INFO L93 Difference]: Finished difference Result 2033 states and 5332 transitions. [2022-11-02 20:14:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:14:09,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) Word has length 7 [2022-11-02 20:14:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:09,458 INFO L225 Difference]: With dead ends: 2033 [2022-11-02 20:14:09,459 INFO L226 Difference]: Without dead ends: 2033 [2022-11-02 20:14:09,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:09,461 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 80 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:09,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 17 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:14:09,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2022-11-02 20:14:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 1982. [2022-11-02 20:14:09,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1892 states have (on average 2.7489429175475686) internal successors, (5201), 1981 states have internal predecessors, (5201), 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) [2022-11-02 20:14:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 5201 transitions. [2022-11-02 20:14:09,540 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 5201 transitions. Word has length 7 [2022-11-02 20:14:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:09,540 INFO L495 AbstractCegarLoop]: Abstraction has 1982 states and 5201 transitions. [2022-11-02 20:14:09,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-02 20:14:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 5201 transitions. [2022-11-02 20:14:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:14:09,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:09,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:09,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:14:09,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1264937480, now seen corresponding path program 2 times [2022-11-02 20:14:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:09,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508540974] [2022-11-02 20:14:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:10,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:10,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508540974] [2022-11-02 20:14:10,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508540974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:10,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:10,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:14:10,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470186539] [2022-11-02 20:14:10,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:10,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:10,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:10,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:10,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:10,189 INFO L87 Difference]: Start difference. First operand 1982 states and 5201 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-02 20:14:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:10,578 INFO L93 Difference]: Finished difference Result 2156 states and 5649 transitions. [2022-11-02 20:14:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:14:10,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) Word has length 7 [2022-11-02 20:14:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:10,592 INFO L225 Difference]: With dead ends: 2156 [2022-11-02 20:14:10,592 INFO L226 Difference]: Without dead ends: 2156 [2022-11-02 20:14:10,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:10,594 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 66 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:10,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 22 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:14:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2022-11-02 20:14:10,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1979. [2022-11-02 20:14:10,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1889 states have (on average 2.749602964531498) internal successors, (5194), 1978 states have internal predecessors, (5194), 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) [2022-11-02 20:14:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 5194 transitions. [2022-11-02 20:14:10,662 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 5194 transitions. Word has length 7 [2022-11-02 20:14:10,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:10,663 INFO L495 AbstractCegarLoop]: Abstraction has 1979 states and 5194 transitions. [2022-11-02 20:14:10,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-02 20:14:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 5194 transitions. [2022-11-02 20:14:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:14:10,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:10,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:10,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:14:10,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:10,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:10,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1265050940, now seen corresponding path program 3 times [2022-11-02 20:14:10,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:10,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903969534] [2022-11-02 20:14:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:10,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:11,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:11,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903969534] [2022-11-02 20:14:11,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903969534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:11,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:11,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:14:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628068238] [2022-11-02 20:14:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:11,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:11,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:11,210 INFO L87 Difference]: Start difference. First operand 1979 states and 5194 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-02 20:14:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:11,528 INFO L93 Difference]: Finished difference Result 2021 states and 5304 transitions. [2022-11-02 20:14:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:14:11,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) Word has length 7 [2022-11-02 20:14:11,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:11,540 INFO L225 Difference]: With dead ends: 2021 [2022-11-02 20:14:11,540 INFO L226 Difference]: Without dead ends: 2021 [2022-11-02 20:14:11,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:11,542 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 94 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:11,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 17 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:14:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-11-02 20:14:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1970. [2022-11-02 20:14:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1880 states have (on average 2.751595744680851) internal successors, (5173), 1969 states have internal predecessors, (5173), 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) [2022-11-02 20:14:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 5173 transitions. [2022-11-02 20:14:11,619 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 5173 transitions. Word has length 7 [2022-11-02 20:14:11,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:11,620 INFO L495 AbstractCegarLoop]: Abstraction has 1970 states and 5173 transitions. [2022-11-02 20:14:11,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-02 20:14:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 5173 transitions. [2022-11-02 20:14:11,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:14:11,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:11,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:11,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:14:11,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:11,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1363430675, now seen corresponding path program 1 times [2022-11-02 20:14:11,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:11,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475758360] [2022-11-02 20:14:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:11,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:11,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:11,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475758360] [2022-11-02 20:14:11,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475758360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:11,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:11,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:11,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196799827] [2022-11-02 20:14:11,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:11,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:11,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:11,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:11,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:11,674 INFO L87 Difference]: Start difference. First operand 1970 states and 5173 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 20:14:11,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:11,918 INFO L93 Difference]: Finished difference Result 3434 states and 9083 transitions. [2022-11-02 20:14:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:11,922 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), 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) Word has length 8 [2022-11-02 20:14:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:11,941 INFO L225 Difference]: With dead ends: 3434 [2022-11-02 20:14:11,941 INFO L226 Difference]: Without dead ends: 3434 [2022-11-02 20:14:11,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:11,943 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 63 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:11,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 16 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:11,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-11-02 20:14:12,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3114. [2022-11-02 20:14:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 3024 states have (on average 2.8382936507936507) internal successors, (8583), 3113 states have internal predecessors, (8583), 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) [2022-11-02 20:14:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 8583 transitions. [2022-11-02 20:14:12,068 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 8583 transitions. Word has length 8 [2022-11-02 20:14:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:12,070 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 8583 transitions. [2022-11-02 20:14:12,070 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), 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) [2022-11-02 20:14:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 8583 transitions. [2022-11-02 20:14:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:14:12,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:12,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:12,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:14:12,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash 681915284, now seen corresponding path program 1 times [2022-11-02 20:14:12,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:12,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231318994] [2022-11-02 20:14:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:12,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:12,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231318994] [2022-11-02 20:14:12,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231318994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:12,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:12,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:12,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197783133] [2022-11-02 20:14:12,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:12,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:12,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:12,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:12,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:12,132 INFO L87 Difference]: Start difference. First operand 3114 states and 8583 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-02 20:14:12,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:12,296 INFO L93 Difference]: Finished difference Result 2876 states and 7696 transitions. [2022-11-02 20:14:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:12,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2022-11-02 20:14:12,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:12,312 INFO L225 Difference]: With dead ends: 2876 [2022-11-02 20:14:12,313 INFO L226 Difference]: Without dead ends: 2868 [2022-11-02 20:14:12,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:12,313 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:12,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 10 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-11-02 20:14:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2708. [2022-11-02 20:14:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2630 states have (on average 2.831939163498099) internal successors, (7448), 2707 states have internal predecessors, (7448), 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) [2022-11-02 20:14:12,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 7448 transitions. [2022-11-02 20:14:12,406 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 7448 transitions. Word has length 9 [2022-11-02 20:14:12,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:12,407 INFO L495 AbstractCegarLoop]: Abstraction has 2708 states and 7448 transitions. [2022-11-02 20:14:12,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-02 20:14:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 7448 transitions. [2022-11-02 20:14:12,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:14:12,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:12,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:12,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:14:12,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:12,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash -240168990, now seen corresponding path program 1 times [2022-11-02 20:14:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974938440] [2022-11-02 20:14:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:13,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:13,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974938440] [2022-11-02 20:14:13,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974938440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:13,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:13,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:14:13,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823731638] [2022-11-02 20:14:13,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:13,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:13,145 INFO L87 Difference]: Start difference. First operand 2708 states and 7448 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-02 20:14:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:13,810 INFO L93 Difference]: Finished difference Result 3184 states and 8663 transitions. [2022-11-02 20:14:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:14:13,810 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) Word has length 9 [2022-11-02 20:14:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:13,848 INFO L225 Difference]: With dead ends: 3184 [2022-11-02 20:14:13,848 INFO L226 Difference]: Without dead ends: 3184 [2022-11-02 20:14:13,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:13,849 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:13,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 33 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:14:13,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2022-11-02 20:14:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 2705. [2022-11-02 20:14:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2627 states have (on average 2.832508564902931) internal successors, (7441), 2704 states have internal predecessors, (7441), 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) [2022-11-02 20:14:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 7441 transitions. [2022-11-02 20:14:13,966 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 7441 transitions. Word has length 9 [2022-11-02 20:14:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:13,966 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 7441 transitions. [2022-11-02 20:14:13,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-02 20:14:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 7441 transitions. [2022-11-02 20:14:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:14:13,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:13,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:13,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:14:13,968 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1350962106, now seen corresponding path program 1 times [2022-11-02 20:14:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:13,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547399448] [2022-11-02 20:14:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:14,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:14,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547399448] [2022-11-02 20:14:14,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547399448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:14,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:14,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:14,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607326415] [2022-11-02 20:14:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:14,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:14:14,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:14,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:14:14,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:14,922 INFO L87 Difference]: Start difference. First operand 2705 states and 7441 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-02 20:14:15,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:15,751 INFO L93 Difference]: Finished difference Result 2880 states and 7875 transitions. [2022-11-02 20:14:15,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:14:15,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) Word has length 10 [2022-11-02 20:14:15,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:15,765 INFO L225 Difference]: With dead ends: 2880 [2022-11-02 20:14:15,766 INFO L226 Difference]: Without dead ends: 2880 [2022-11-02 20:14:15,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:15,768 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:15,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 33 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:14:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2022-11-02 20:14:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2830. [2022-11-02 20:14:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 2752 states have (on average 2.816497093023256) internal successors, (7751), 2829 states have internal predecessors, (7751), 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) [2022-11-02 20:14:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 7751 transitions. [2022-11-02 20:14:15,867 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 7751 transitions. Word has length 10 [2022-11-02 20:14:15,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:15,867 INFO L495 AbstractCegarLoop]: Abstraction has 2830 states and 7751 transitions. [2022-11-02 20:14:15,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-02 20:14:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 7751 transitions. [2022-11-02 20:14:15,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:14:15,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:15,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:15,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:14:15,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:15,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash 291266912, now seen corresponding path program 2 times [2022-11-02 20:14:15,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:15,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830836648] [2022-11-02 20:14:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:16,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:16,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830836648] [2022-11-02 20:14:16,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830836648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:16,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:16,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:16,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551073719] [2022-11-02 20:14:16,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:16,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:14:16,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:16,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:14:16,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:16,762 INFO L87 Difference]: Start difference. First operand 2830 states and 7751 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-02 20:14:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:17,526 INFO L93 Difference]: Finished difference Result 3434 states and 9283 transitions. [2022-11-02 20:14:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:14:17,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) Word has length 10 [2022-11-02 20:14:17,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:17,539 INFO L225 Difference]: With dead ends: 3434 [2022-11-02 20:14:17,540 INFO L226 Difference]: Without dead ends: 3434 [2022-11-02 20:14:17,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:17,541 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 59 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:17,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 39 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:14:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-11-02 20:14:17,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 2805. [2022-11-02 20:14:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2727 states have (on average 2.8195819581958195) internal successors, (7689), 2804 states have internal predecessors, (7689), 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) [2022-11-02 20:14:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 7689 transitions. [2022-11-02 20:14:17,685 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 7689 transitions. Word has length 10 [2022-11-02 20:14:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:17,685 INFO L495 AbstractCegarLoop]: Abstraction has 2805 states and 7689 transitions. [2022-11-02 20:14:17,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-02 20:14:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 7689 transitions. [2022-11-02 20:14:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:14:17,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:17,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:17,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:14:17,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:17,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1206147348, now seen corresponding path program 3 times [2022-11-02 20:14:17,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:17,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288084064] [2022-11-02 20:14:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:17,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:18,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:18,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288084064] [2022-11-02 20:14:18,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288084064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:18,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:18,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:18,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258721831] [2022-11-02 20:14:18,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:18,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:14:18,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:18,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:14:18,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:18,512 INFO L87 Difference]: Start difference. First operand 2805 states and 7689 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-02 20:14:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:18,980 INFO L93 Difference]: Finished difference Result 2734 states and 7480 transitions. [2022-11-02 20:14:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:14:18,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) Word has length 10 [2022-11-02 20:14:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:18,991 INFO L225 Difference]: With dead ends: 2734 [2022-11-02 20:14:18,992 INFO L226 Difference]: Without dead ends: 2734 [2022-11-02 20:14:18,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:18,993 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:18,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 17 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:14:19,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2022-11-02 20:14:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2634. [2022-11-02 20:14:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2564 states have (on average 2.8205928237129485) internal successors, (7232), 2633 states have internal predecessors, (7232), 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) [2022-11-02 20:14:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 7232 transitions. [2022-11-02 20:14:19,075 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 7232 transitions. Word has length 10 [2022-11-02 20:14:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:19,076 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 7232 transitions. [2022-11-02 20:14:19,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-02 20:14:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 7232 transitions. [2022-11-02 20:14:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:14:19,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:19,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:19,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:14:19,078 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash -454618428, now seen corresponding path program 1 times [2022-11-02 20:14:19,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:19,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076327587] [2022-11-02 20:14:19,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:19,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:19,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:19,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076327587] [2022-11-02 20:14:19,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076327587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:14:19,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660191904] [2022-11-02 20:14:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:19,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:19,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:19,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:19,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:14:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:19,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:14:19,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:19,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:19,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660191904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:19,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:14:19,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:14:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032055012] [2022-11-02 20:14:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:19,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:14:19,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:19,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:14:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:19,365 INFO L87 Difference]: Start difference. First operand 2634 states and 7232 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-02 20:14:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:19,647 INFO L93 Difference]: Finished difference Result 2770 states and 7309 transitions. [2022-11-02 20:14:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:14:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2022-11-02 20:14:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:19,659 INFO L225 Difference]: With dead ends: 2770 [2022-11-02 20:14:19,660 INFO L226 Difference]: Without dead ends: 2770 [2022-11-02 20:14:19,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:19,661 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 116 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:19,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 30 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:14:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2022-11-02 20:14:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2562. [2022-11-02 20:14:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2501 states have (on average 2.799280287884846) internal successors, (7001), 2561 states have internal predecessors, (7001), 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) [2022-11-02 20:14:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 7001 transitions. [2022-11-02 20:14:19,752 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 7001 transitions. Word has length 11 [2022-11-02 20:14:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:19,752 INFO L495 AbstractCegarLoop]: Abstraction has 2562 states and 7001 transitions. [2022-11-02 20:14:19,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-02 20:14:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 7001 transitions. [2022-11-02 20:14:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:14:19,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:19,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:19,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:19,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f26872af-df38-4e1f-86cb-131a06230ec4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:14:19,974 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash -454618504, now seen corresponding path program 1 times [2022-11-02 20:14:19,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:19,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996908247] [2022-11-02 20:14:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:19,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:14:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:20,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996908247] [2022-11-02 20:14:20,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996908247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:20,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:20,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:20,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579810224] [2022-11-02 20:14:20,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:20,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:20,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:20,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:20,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:20,021 INFO L87 Difference]: Start difference. First operand 2562 states and 7001 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-02 20:14:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:20,193 INFO L93 Difference]: Finished difference Result 2490 states and 6770 transitions. [2022-11-02 20:14:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:20,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2022-11-02 20:14:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:20,203 INFO L225 Difference]: With dead ends: 2490 [2022-11-02 20:14:20,203 INFO L226 Difference]: Without dead ends: 2420 [2022-11-02 20:14:20,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:20,204 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 57 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:20,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 14 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2022-11-02 20:14:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1576. [2022-11-02 20:14:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1524 states have (on average 2.776246719160105) internal successors, (4231), 1575 states have internal predecessors, (4231), 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) [2022-11-02 20:14:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 4231 transitions. [2022-11-02 20:14:20,310 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 4231 transitions. Word has length 11 [2022-11-02 20:14:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:20,311 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 4231 transitions. [2022-11-02 20:14:20,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-02 20:14:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 4231 transitions. [2022-11-02 20:14:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:14:20,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:20,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:20,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:14:20,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:20,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1275475573, now seen corresponding path program 1 times [2022-11-02 20:14:20,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:20,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366043047] [2022-11-02 20:14:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:20,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:20,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:20,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366043047] [2022-11-02 20:14:20,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366043047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:20,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:20,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:20,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15846581] [2022-11-02 20:14:20,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:20,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:20,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:20,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:20,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:20,372 INFO L87 Difference]: Start difference. First operand 1576 states and 4231 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-02 20:14:20,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:20,542 INFO L93 Difference]: Finished difference Result 1948 states and 5225 transitions. [2022-11-02 20:14:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:20,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) Word has length 17 [2022-11-02 20:14:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:20,549 INFO L225 Difference]: With dead ends: 1948 [2022-11-02 20:14:20,549 INFO L226 Difference]: Without dead ends: 1948 [2022-11-02 20:14:20,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:20,550 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:20,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 13 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:20,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2022-11-02 20:14:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1884. [2022-11-02 20:14:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1832 states have (on average 2.7974890829694323) internal successors, (5125), 1883 states have internal predecessors, (5125), 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) [2022-11-02 20:14:20,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 5125 transitions. [2022-11-02 20:14:20,602 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 5125 transitions. Word has length 17 [2022-11-02 20:14:20,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:20,603 INFO L495 AbstractCegarLoop]: Abstraction has 1884 states and 5125 transitions. [2022-11-02 20:14:20,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-02 20:14:20,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 5125 transitions. [2022-11-02 20:14:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:14:20,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:20,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:20,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:14:20,616 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash -885310297, now seen corresponding path program 1 times [2022-11-02 20:14:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:20,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246788886] [2022-11-02 20:14:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:21,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:21,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246788886] [2022-11-02 20:14:21,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246788886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:21,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:21,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:14:21,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115908960] [2022-11-02 20:14:21,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:21,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:14:21,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:21,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:14:21,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:14:21,322 INFO L87 Difference]: Start difference. First operand 1884 states and 5125 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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) [2022-11-02 20:14:22,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:22,770 INFO L93 Difference]: Finished difference Result 5046 states and 13792 transitions. [2022-11-02 20:14:22,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:14:22,771 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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) Word has length 18 [2022-11-02 20:14:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:22,791 INFO L225 Difference]: With dead ends: 5046 [2022-11-02 20:14:22,791 INFO L226 Difference]: Without dead ends: 5046 [2022-11-02 20:14:22,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:14:22,792 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 535 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:22,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 87 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:14:22,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5046 states. [2022-11-02 20:14:22,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5046 to 3004. [2022-11-02 20:14:22,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 2952 states have (on average 2.9495257452574526) internal successors, (8707), 3003 states have internal predecessors, (8707), 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) [2022-11-02 20:14:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 8707 transitions. [2022-11-02 20:14:22,937 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 8707 transitions. Word has length 18 [2022-11-02 20:14:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:22,938 INFO L495 AbstractCegarLoop]: Abstraction has 3004 states and 8707 transitions. [2022-11-02 20:14:22,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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) [2022-11-02 20:14:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 8707 transitions. [2022-11-02 20:14:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:14:22,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:22,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:22,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:14:22,941 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:22,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash -885310337, now seen corresponding path program 1 times [2022-11-02 20:14:22,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:22,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278301736] [2022-11-02 20:14:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:22,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:24,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:24,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278301736] [2022-11-02 20:14:24,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278301736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:24,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:24,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:14:24,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059036445] [2022-11-02 20:14:24,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:24,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:14:24,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:14:24,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:14:24,408 INFO L87 Difference]: Start difference. First operand 3004 states and 8707 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-11-02 20:14:25,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:25,131 INFO L93 Difference]: Finished difference Result 3003 states and 8704 transitions. [2022-11-02 20:14:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:14:25,132 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) Word has length 18 [2022-11-02 20:14:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:25,143 INFO L225 Difference]: With dead ends: 3003 [2022-11-02 20:14:25,143 INFO L226 Difference]: Without dead ends: 3003 [2022-11-02 20:14:25,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:14:25,144 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:25,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 26 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:14:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2022-11-02 20:14:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 3003. [2022-11-02 20:14:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2951 states have (on average 2.949508641138597) internal successors, (8704), 3002 states have internal predecessors, (8704), 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) [2022-11-02 20:14:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 8704 transitions. [2022-11-02 20:14:25,220 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 8704 transitions. Word has length 18 [2022-11-02 20:14:25,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:25,220 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 8704 transitions. [2022-11-02 20:14:25,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-11-02 20:14:25,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 8704 transitions. [2022-11-02 20:14:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:14:25,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:25,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:25,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:14:25,222 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1775847579, now seen corresponding path program 1 times [2022-11-02 20:14:25,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:25,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539728711] [2022-11-02 20:14:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:25,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:26,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:26,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539728711] [2022-11-02 20:14:26,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539728711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:26,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:26,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:14:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800675204] [2022-11-02 20:14:26,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:26,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:14:26,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:26,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:14:26,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:14:26,590 INFO L87 Difference]: Start difference. First operand 3003 states and 8704 transitions. Second operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-02 20:14:27,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:27,782 INFO L93 Difference]: Finished difference Result 3143 states and 9040 transitions. [2022-11-02 20:14:27,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:14:27,783 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) Word has length 19 [2022-11-02 20:14:27,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:27,795 INFO L225 Difference]: With dead ends: 3143 [2022-11-02 20:14:27,796 INFO L226 Difference]: Without dead ends: 3143 [2022-11-02 20:14:27,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:14:27,797 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 216 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:27,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 103 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:14:27,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2022-11-02 20:14:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3083. [2022-11-02 20:14:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 3031 states have (on average 2.9409435829759154) internal successors, (8914), 3082 states have internal predecessors, (8914), 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) [2022-11-02 20:14:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 8914 transitions. [2022-11-02 20:14:27,879 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 8914 transitions. Word has length 19 [2022-11-02 20:14:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:27,880 INFO L495 AbstractCegarLoop]: Abstraction has 3083 states and 8914 transitions. [2022-11-02 20:14:27,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-02 20:14:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 8914 transitions. [2022-11-02 20:14:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:14:27,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:27,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:27,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:14:27,882 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:27,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1910390481, now seen corresponding path program 1 times [2022-11-02 20:14:27,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:27,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420385540] [2022-11-02 20:14:27,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:27,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:28,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:28,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420385540] [2022-11-02 20:14:28,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420385540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:28,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:28,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:14:28,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857281214] [2022-11-02 20:14:28,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:28,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:14:28,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:28,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:14:28,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:14:28,735 INFO L87 Difference]: Start difference. First operand 3083 states and 8914 transitions. Second operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 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) [2022-11-02 20:14:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:29,681 INFO L93 Difference]: Finished difference Result 3025 states and 8745 transitions. [2022-11-02 20:14:29,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:14:29,681 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 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) Word has length 19 [2022-11-02 20:14:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:29,690 INFO L225 Difference]: With dead ends: 3025 [2022-11-02 20:14:29,690 INFO L226 Difference]: Without dead ends: 3025 [2022-11-02 20:14:29,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:14:29,692 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 308 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:29,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 53 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:14:29,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2022-11-02 20:14:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2108. [2022-11-02 20:14:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2062 states have (on average 2.7880698351115423) internal successors, (5749), 2107 states have internal predecessors, (5749), 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) [2022-11-02 20:14:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5749 transitions. [2022-11-02 20:14:29,753 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5749 transitions. Word has length 19 [2022-11-02 20:14:29,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:29,753 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 5749 transitions. [2022-11-02 20:14:29,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 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) [2022-11-02 20:14:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5749 transitions. [2022-11-02 20:14:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:14:29,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:29,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:29,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:14:29,755 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:29,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1910390441, now seen corresponding path program 2 times [2022-11-02 20:14:29,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:29,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824431383] [2022-11-02 20:14:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:29,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:31,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:31,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824431383] [2022-11-02 20:14:31,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824431383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:31,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:31,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:14:31,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720236208] [2022-11-02 20:14:31,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:31,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:14:31,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:31,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:14:31,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:14:31,020 INFO L87 Difference]: Start difference. First operand 2108 states and 5749 transitions. Second operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-02 20:14:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:31,884 INFO L93 Difference]: Finished difference Result 2408 states and 6559 transitions. [2022-11-02 20:14:31,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:14:31,884 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) Word has length 19 [2022-11-02 20:14:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:31,892 INFO L225 Difference]: With dead ends: 2408 [2022-11-02 20:14:31,892 INFO L226 Difference]: Without dead ends: 2408 [2022-11-02 20:14:31,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:14:31,893 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 191 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:31,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 76 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:14:31,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2022-11-02 20:14:31,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2063. [2022-11-02 20:14:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2063 states, 2017 states have (on average 2.7922657411998015) internal successors, (5632), 2062 states have internal predecessors, (5632), 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) [2022-11-02 20:14:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 5632 transitions. [2022-11-02 20:14:31,946 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 5632 transitions. Word has length 19 [2022-11-02 20:14:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:31,946 INFO L495 AbstractCegarLoop]: Abstraction has 2063 states and 5632 transitions. [2022-11-02 20:14:31,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-02 20:14:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 5632 transitions. [2022-11-02 20:14:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:14:31,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:31,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:31,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:14:31,949 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash 434066381, now seen corresponding path program 3 times [2022-11-02 20:14:31,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:31,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690403499] [2022-11-02 20:14:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:33,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:33,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690403499] [2022-11-02 20:14:33,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690403499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:33,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:33,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:14:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694983680] [2022-11-02 20:14:33,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:33,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:14:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:14:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:14:33,846 INFO L87 Difference]: Start difference. First operand 2063 states and 5632 transitions. Second operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-02 20:14:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:35,392 INFO L93 Difference]: Finished difference Result 2243 states and 6101 transitions. [2022-11-02 20:14:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:14:35,394 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) Word has length 19 [2022-11-02 20:14:35,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:35,401 INFO L225 Difference]: With dead ends: 2243 [2022-11-02 20:14:35,401 INFO L226 Difference]: Without dead ends: 2243 [2022-11-02 20:14:35,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:14:35,402 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 216 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:35,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 94 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:14:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2022-11-02 20:14:35,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1943. [2022-11-02 20:14:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1897 states have (on average 2.7854507116499736) internal successors, (5284), 1942 states have internal predecessors, (5284), 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) [2022-11-02 20:14:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 5284 transitions. [2022-11-02 20:14:35,450 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 5284 transitions. Word has length 19 [2022-11-02 20:14:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:35,451 INFO L495 AbstractCegarLoop]: Abstraction has 1943 states and 5284 transitions. [2022-11-02 20:14:35,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-02 20:14:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 5284 transitions. [2022-11-02 20:14:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:14:35,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:35,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:35,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:14:35,452 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1674623545, now seen corresponding path program 4 times [2022-11-02 20:14:35,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:35,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079328077] [2022-11-02 20:14:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:37,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:37,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079328077] [2022-11-02 20:14:37,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079328077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:37,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:37,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:14:37,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530768557] [2022-11-02 20:14:37,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:37,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:14:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:14:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:14:37,003 INFO L87 Difference]: Start difference. First operand 1943 states and 5284 transitions. Second operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-02 20:14:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:38,334 INFO L93 Difference]: Finished difference Result 2048 states and 5534 transitions. [2022-11-02 20:14:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:14:38,335 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) Word has length 19 [2022-11-02 20:14:38,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:38,341 INFO L225 Difference]: With dead ends: 2048 [2022-11-02 20:14:38,341 INFO L226 Difference]: Without dead ends: 2048 [2022-11-02 20:14:38,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:14:38,342 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 247 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:38,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 75 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:14:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2022-11-02 20:14:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1923. [2022-11-02 20:14:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1877 states have (on average 2.786893979754928) internal successors, (5231), 1922 states have internal predecessors, (5231), 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) [2022-11-02 20:14:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 5231 transitions. [2022-11-02 20:14:38,407 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 5231 transitions. Word has length 19 [2022-11-02 20:14:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:38,407 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 5231 transitions. [2022-11-02 20:14:38,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-02 20:14:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 5231 transitions. [2022-11-02 20:14:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:14:38,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:38,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:38,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:14:38,410 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:38,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1674815125, now seen corresponding path program 5 times [2022-11-02 20:14:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:38,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873517833] [2022-11-02 20:14:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:39,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:39,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873517833] [2022-11-02 20:14:39,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873517833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:39,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:39,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:14:39,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425195200] [2022-11-02 20:14:39,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:39,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:14:39,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:39,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:14:39,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:14:39,806 INFO L87 Difference]: Start difference. First operand 1923 states and 5231 transitions. Second operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-02 20:14:40,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:40,690 INFO L93 Difference]: Finished difference Result 1958 states and 5282 transitions. [2022-11-02 20:14:40,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:14:40,690 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) Word has length 19 [2022-11-02 20:14:40,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:40,694 INFO L225 Difference]: With dead ends: 1958 [2022-11-02 20:14:40,694 INFO L226 Difference]: Without dead ends: 1958 [2022-11-02 20:14:40,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:14:40,695 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 242 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:40,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 78 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:14:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2022-11-02 20:14:40,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1898. [2022-11-02 20:14:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1852 states have (on average 2.7802375809935205) internal successors, (5149), 1897 states have internal predecessors, (5149), 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) [2022-11-02 20:14:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 5149 transitions. [2022-11-02 20:14:40,746 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 5149 transitions. Word has length 19 [2022-11-02 20:14:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:40,747 INFO L495 AbstractCegarLoop]: Abstraction has 1898 states and 5149 transitions. [2022-11-02 20:14:40,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-02 20:14:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 5149 transitions. [2022-11-02 20:14:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:14:40,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:40,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:40,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:14:40,749 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:40,749 INFO L85 PathProgramCache]: Analyzing trace with hash -113580692, now seen corresponding path program 1 times [2022-11-02 20:14:40,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:40,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926468011] [2022-11-02 20:14:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:40,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:40,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:40,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926468011] [2022-11-02 20:14:40,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926468011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:40,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:40,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561896181] [2022-11-02 20:14:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:40,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:40,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:40,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:40,798 INFO L87 Difference]: Start difference. First operand 1898 states and 5149 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-11-02 20:14:40,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:40,899 INFO L93 Difference]: Finished difference Result 1778 states and 4823 transitions. [2022-11-02 20:14:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:40,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) Word has length 20 [2022-11-02 20:14:40,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:40,904 INFO L225 Difference]: With dead ends: 1778 [2022-11-02 20:14:40,904 INFO L226 Difference]: Without dead ends: 1778 [2022-11-02 20:14:40,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:40,905 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 46 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:40,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 9 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2022-11-02 20:14:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1778. [2022-11-02 20:14:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1744 states have (on average 2.7654816513761467) internal successors, (4823), 1777 states have internal predecessors, (4823), 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) [2022-11-02 20:14:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4823 transitions. [2022-11-02 20:14:40,949 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4823 transitions. Word has length 20 [2022-11-02 20:14:40,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:40,950 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 4823 transitions. [2022-11-02 20:14:40,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-11-02 20:14:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4823 transitions. [2022-11-02 20:14:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:14:40,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:40,951 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:40,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:14:40,952 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:40,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:40,952 INFO L85 PathProgramCache]: Analyzing trace with hash -113580802, now seen corresponding path program 1 times [2022-11-02 20:14:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:40,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696132238] [2022-11-02 20:14:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:40,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:14:40,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:40,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696132238] [2022-11-02 20:14:40,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696132238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:40,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:40,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:40,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064576317] [2022-11-02 20:14:40,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:40,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:40,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:40,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:40,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:40,997 INFO L87 Difference]: Start difference. First operand 1778 states and 4823 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-11-02 20:14:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:41,113 INFO L93 Difference]: Finished difference Result 1658 states and 4497 transitions. [2022-11-02 20:14:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:41,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) Word has length 20 [2022-11-02 20:14:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:41,119 INFO L225 Difference]: With dead ends: 1658 [2022-11-02 20:14:41,119 INFO L226 Difference]: Without dead ends: 1658 [2022-11-02 20:14:41,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:41,120 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:41,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 10 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2022-11-02 20:14:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1330. [2022-11-02 20:14:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1308 states have (on average 2.7408256880733943) internal successors, (3585), 1329 states have internal predecessors, (3585), 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) [2022-11-02 20:14:41,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 3585 transitions. [2022-11-02 20:14:41,159 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 3585 transitions. Word has length 20 [2022-11-02 20:14:41,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:41,159 INFO L495 AbstractCegarLoop]: Abstraction has 1330 states and 3585 transitions. [2022-11-02 20:14:41,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-11-02 20:14:41,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 3585 transitions. [2022-11-02 20:14:41,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 20:14:41,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:41,161 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] [2022-11-02 20:14:41,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:14:41,161 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:41,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:41,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1116180075, now seen corresponding path program 1 times [2022-11-02 20:14:41,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:41,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263345024] [2022-11-02 20:14:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:41,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:41,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:41,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263345024] [2022-11-02 20:14:41,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263345024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:41,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:41,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:14:41,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146869384] [2022-11-02 20:14:41,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:41,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:14:41,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:41,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:14:41,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:41,690 INFO L87 Difference]: Start difference. First operand 1330 states and 3585 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2022-11-02 20:14:42,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:42,541 INFO L93 Difference]: Finished difference Result 3356 states and 9129 transitions. [2022-11-02 20:14:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:14:42,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) Word has length 21 [2022-11-02 20:14:42,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:42,556 INFO L225 Difference]: With dead ends: 3356 [2022-11-02 20:14:42,557 INFO L226 Difference]: Without dead ends: 3356 [2022-11-02 20:14:42,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:14:42,562 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 457 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:42,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 58 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:14:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2022-11-02 20:14:42,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 2138. [2022-11-02 20:14:42,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 2116 states have (on average 2.830812854442344) internal successors, (5990), 2137 states have internal predecessors, (5990), 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) [2022-11-02 20:14:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 5990 transitions. [2022-11-02 20:14:42,625 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 5990 transitions. Word has length 21 [2022-11-02 20:14:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:42,626 INFO L495 AbstractCegarLoop]: Abstraction has 2138 states and 5990 transitions. [2022-11-02 20:14:42,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2022-11-02 20:14:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 5990 transitions. [2022-11-02 20:14:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 20:14:42,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:42,628 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] [2022-11-02 20:14:42,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:14:42,630 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:42,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:42,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1116180076, now seen corresponding path program 1 times [2022-11-02 20:14:42,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:42,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979693109] [2022-11-02 20:14:42,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:42,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:43,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:43,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979693109] [2022-11-02 20:14:43,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979693109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:43,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:43,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:14:43,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862192891] [2022-11-02 20:14:43,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:43,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:14:43,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:43,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:14:43,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:14:43,837 INFO L87 Difference]: Start difference. First operand 2138 states and 5990 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2022-11-02 20:14:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:44,781 INFO L93 Difference]: Finished difference Result 2361 states and 6585 transitions. [2022-11-02 20:14:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:14:44,782 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) Word has length 21 [2022-11-02 20:14:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:44,787 INFO L225 Difference]: With dead ends: 2361 [2022-11-02 20:14:44,787 INFO L226 Difference]: Without dead ends: 2361 [2022-11-02 20:14:44,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:14:44,788 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 96 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:44,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 78 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:14:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2022-11-02 20:14:44,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2346. [2022-11-02 20:14:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2324 states have (on average 2.816695352839931) internal successors, (6546), 2345 states have internal predecessors, (6546), 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) [2022-11-02 20:14:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 6546 transitions. [2022-11-02 20:14:44,844 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 6546 transitions. Word has length 21 [2022-11-02 20:14:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:44,845 INFO L495 AbstractCegarLoop]: Abstraction has 2346 states and 6546 transitions. [2022-11-02 20:14:44,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2022-11-02 20:14:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 6546 transitions. [2022-11-02 20:14:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:14:44,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:44,847 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] [2022-11-02 20:14:44,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:14:44,847 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:44,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:44,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1129661232, now seen corresponding path program 1 times [2022-11-02 20:14:44,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:44,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176359057] [2022-11-02 20:14:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:46,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:46,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176359057] [2022-11-02 20:14:46,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176359057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:46,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:46,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:14:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042234705] [2022-11-02 20:14:46,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:46,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:14:46,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:46,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:14:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:14:46,292 INFO L87 Difference]: Start difference. First operand 2346 states and 6546 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) [2022-11-02 20:14:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:47,630 INFO L93 Difference]: Finished difference Result 2631 states and 7302 transitions. [2022-11-02 20:14:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:14:47,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) Word has length 22 [2022-11-02 20:14:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:47,639 INFO L225 Difference]: With dead ends: 2631 [2022-11-02 20:14:47,639 INFO L226 Difference]: Without dead ends: 2631 [2022-11-02 20:14:47,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:14:47,640 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 153 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:47,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 88 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:14:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2022-11-02 20:14:47,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2406. [2022-11-02 20:14:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 2384 states have (on average 2.811241610738255) internal successors, (6702), 2405 states have internal predecessors, (6702), 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) [2022-11-02 20:14:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 6702 transitions. [2022-11-02 20:14:47,700 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 6702 transitions. Word has length 22 [2022-11-02 20:14:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:47,701 INFO L495 AbstractCegarLoop]: Abstraction has 2406 states and 6702 transitions. [2022-11-02 20:14:47,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) [2022-11-02 20:14:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 6702 transitions. [2022-11-02 20:14:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:14:47,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:47,703 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] [2022-11-02 20:14:47,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:14:47,703 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:47,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:47,704 INFO L85 PathProgramCache]: Analyzing trace with hash 571366558, now seen corresponding path program 2 times [2022-11-02 20:14:47,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:47,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444069881] [2022-11-02 20:14:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:47,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:48,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:48,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444069881] [2022-11-02 20:14:48,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444069881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:48,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:48,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:14:48,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761134526] [2022-11-02 20:14:48,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:48,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:14:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:14:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:14:48,795 INFO L87 Difference]: Start difference. First operand 2406 states and 6702 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) [2022-11-02 20:14:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:49,506 INFO L93 Difference]: Finished difference Result 2451 states and 6806 transitions. [2022-11-02 20:14:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:14:49,507 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) Word has length 22 [2022-11-02 20:14:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:49,513 INFO L225 Difference]: With dead ends: 2451 [2022-11-02 20:14:49,513 INFO L226 Difference]: Without dead ends: 2451 [2022-11-02 20:14:49,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:14:49,514 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 180 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:49,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 58 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:14:49,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2022-11-02 20:14:49,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2166. [2022-11-02 20:14:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 2144 states have (on average 2.8218283582089554) internal successors, (6050), 2165 states have internal predecessors, (6050), 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) [2022-11-02 20:14:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 6050 transitions. [2022-11-02 20:14:49,570 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 6050 transitions. Word has length 22 [2022-11-02 20:14:49,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:49,570 INFO L495 AbstractCegarLoop]: Abstraction has 2166 states and 6050 transitions. [2022-11-02 20:14:49,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) [2022-11-02 20:14:49,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 6050 transitions. [2022-11-02 20:14:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:14:49,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:49,572 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] [2022-11-02 20:14:49,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:14:49,572 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:49,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:49,573 INFO L85 PathProgramCache]: Analyzing trace with hash -872706979, now seen corresponding path program 1 times [2022-11-02 20:14:49,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:49,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518753204] [2022-11-02 20:14:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:49,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:50,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:50,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518753204] [2022-11-02 20:14:50,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518753204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:50,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:50,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:14:50,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640833621] [2022-11-02 20:14:50,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:50,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:14:50,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:50,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:14:50,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:14:50,153 INFO L87 Difference]: Start difference. First operand 2166 states and 6050 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2022-11-02 20:14:50,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:50,782 INFO L93 Difference]: Finished difference Result 2108 states and 5896 transitions. [2022-11-02 20:14:50,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:14:50,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) Word has length 22 [2022-11-02 20:14:50,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:50,788 INFO L225 Difference]: With dead ends: 2108 [2022-11-02 20:14:50,788 INFO L226 Difference]: Without dead ends: 2108 [2022-11-02 20:14:50,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:14:50,789 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 322 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:50,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 28 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:14:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2022-11-02 20:14:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1463. [2022-11-02 20:14:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1447 states have (on average 2.7256392536281964) internal successors, (3944), 1462 states have internal predecessors, (3944), 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) [2022-11-02 20:14:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 3944 transitions. [2022-11-02 20:14:50,844 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 3944 transitions. Word has length 22 [2022-11-02 20:14:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:50,844 INFO L495 AbstractCegarLoop]: Abstraction has 1463 states and 3944 transitions. [2022-11-02 20:14:50,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2022-11-02 20:14:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 3944 transitions. [2022-11-02 20:14:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:14:50,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:50,846 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] [2022-11-02 20:14:50,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:14:50,847 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:50,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:50,848 INFO L85 PathProgramCache]: Analyzing trace with hash -872706978, now seen corresponding path program 3 times [2022-11-02 20:14:50,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:50,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840364005] [2022-11-02 20:14:50,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:50,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:51,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:51,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840364005] [2022-11-02 20:14:51,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840364005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:51,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:51,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:14:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736536561] [2022-11-02 20:14:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:51,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:14:51,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:14:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:14:51,724 INFO L87 Difference]: Start difference. First operand 1463 states and 3944 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2022-11-02 20:14:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:52,561 INFO L93 Difference]: Finished difference Result 2011 states and 5420 transitions. [2022-11-02 20:14:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:14:52,562 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) Word has length 22 [2022-11-02 20:14:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:52,565 INFO L225 Difference]: With dead ends: 2011 [2022-11-02 20:14:52,565 INFO L226 Difference]: Without dead ends: 2011 [2022-11-02 20:14:52,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:14:52,566 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 198 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:52,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 89 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:14:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2022-11-02 20:14:52,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1637. [2022-11-02 20:14:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1621 states have (on average 2.766810610734115) internal successors, (4485), 1636 states have internal predecessors, (4485), 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) [2022-11-02 20:14:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 4485 transitions. [2022-11-02 20:14:52,607 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 4485 transitions. Word has length 22 [2022-11-02 20:14:52,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:52,607 INFO L495 AbstractCegarLoop]: Abstraction has 1637 states and 4485 transitions. [2022-11-02 20:14:52,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2022-11-02 20:14:52,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 4485 transitions. [2022-11-02 20:14:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:14:52,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:52,609 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] [2022-11-02 20:14:52,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:14:52,609 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:52,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:52,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1632346148, now seen corresponding path program 4 times [2022-11-02 20:14:52,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:52,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068197448] [2022-11-02 20:14:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:52,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:53,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:53,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068197448] [2022-11-02 20:14:53,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068197448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:53,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:53,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:14:53,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594417855] [2022-11-02 20:14:53,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:53,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:14:53,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:53,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:14:53,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:14:53,815 INFO L87 Difference]: Start difference. First operand 1637 states and 4485 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) [2022-11-02 20:14:54,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:54,601 INFO L93 Difference]: Finished difference Result 1388 states and 3723 transitions. [2022-11-02 20:14:54,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:14:54,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) Word has length 22 [2022-11-02 20:14:54,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:54,604 INFO L225 Difference]: With dead ends: 1388 [2022-11-02 20:14:54,605 INFO L226 Difference]: Without dead ends: 1388 [2022-11-02 20:14:54,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:14:54,606 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 190 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:54,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 65 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:14:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-11-02 20:14:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1288. [2022-11-02 20:14:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1272 states have (on average 2.7232704402515724) internal successors, (3464), 1287 states have internal predecessors, (3464), 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) [2022-11-02 20:14:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 3464 transitions. [2022-11-02 20:14:54,636 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 3464 transitions. Word has length 22 [2022-11-02 20:14:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:54,637 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 3464 transitions. [2022-11-02 20:14:54,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) [2022-11-02 20:14:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 3464 transitions. [2022-11-02 20:14:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:14:54,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:54,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:54,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 20:14:54,639 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:54,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash -537339187, now seen corresponding path program 1 times [2022-11-02 20:14:54,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:54,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173527252] [2022-11-02 20:14:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:54,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:54,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:54,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173527252] [2022-11-02 20:14:54,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173527252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:54,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:54,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:54,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468888080] [2022-11-02 20:14:54,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:54,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:54,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:54,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:54,712 INFO L87 Difference]: Start difference. First operand 1288 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-11-02 20:14:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:54,798 INFO L93 Difference]: Finished difference Result 756 states and 1955 transitions. [2022-11-02 20:14:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:54,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) Word has length 31 [2022-11-02 20:14:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:54,800 INFO L225 Difference]: With dead ends: 756 [2022-11-02 20:14:54,800 INFO L226 Difference]: Without dead ends: 696 [2022-11-02 20:14:54,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:54,801 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:54,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 11 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:54,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-11-02 20:14:54,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 638. [2022-11-02 20:14:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 626 states have (on average 2.5431309904153356) internal successors, (1592), 637 states have internal predecessors, (1592), 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) [2022-11-02 20:14:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1592 transitions. [2022-11-02 20:14:54,815 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1592 transitions. Word has length 31 [2022-11-02 20:14:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:54,815 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1592 transitions. [2022-11-02 20:14:54,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-11-02 20:14:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1592 transitions. [2022-11-02 20:14:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 20:14:54,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:54,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:54,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:14:54,816 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:54,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:54,817 INFO L85 PathProgramCache]: Analyzing trace with hash 426673159, now seen corresponding path program 1 times [2022-11-02 20:14:54,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:54,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890723805] [2022-11-02 20:14:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:54,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:54,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:54,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890723805] [2022-11-02 20:14:54,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890723805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:54,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:54,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:54,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180785366] [2022-11-02 20:14:54,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:54,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:54,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:54,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:54,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:54,891 INFO L87 Difference]: Start difference. First operand 638 states and 1592 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-11-02 20:14:54,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:54,992 INFO L93 Difference]: Finished difference Result 446 states and 980 transitions. [2022-11-02 20:14:54,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:54,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) Word has length 32 [2022-11-02 20:14:54,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:54,994 INFO L225 Difference]: With dead ends: 446 [2022-11-02 20:14:54,994 INFO L226 Difference]: Without dead ends: 428 [2022-11-02 20:14:54,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:54,996 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 46 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:54,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 4 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:55,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-02 20:14:55,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2022-11-02 20:14:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 422 states have (on average 2.2369668246445498) internal successors, (944), 427 states have internal predecessors, (944), 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) [2022-11-02 20:14:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 944 transitions. [2022-11-02 20:14:55,013 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 944 transitions. Word has length 32 [2022-11-02 20:14:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:55,014 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 944 transitions. [2022-11-02 20:14:55,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-11-02 20:14:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 944 transitions. [2022-11-02 20:14:55,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:14:55,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:55,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:55,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 20:14:55,018 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:55,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:55,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1293899210, now seen corresponding path program 1 times [2022-11-02 20:14:55,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:55,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114290314] [2022-11-02 20:14:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:55,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:56,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:56,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114290314] [2022-11-02 20:14:56,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114290314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:56,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:56,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:14:56,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078721801] [2022-11-02 20:14:56,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:56,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:14:56,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:56,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:14:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:14:56,054 INFO L87 Difference]: Start difference. First operand 428 states and 944 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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) [2022-11-02 20:14:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:57,419 INFO L93 Difference]: Finished difference Result 1131 states and 2510 transitions. [2022-11-02 20:14:57,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:14:57,419 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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) Word has length 33 [2022-11-02 20:14:57,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:57,421 INFO L225 Difference]: With dead ends: 1131 [2022-11-02 20:14:57,421 INFO L226 Difference]: Without dead ends: 1131 [2022-11-02 20:14:57,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:14:57,422 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 541 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:57,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 77 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:14:57,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-11-02 20:14:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 767. [2022-11-02 20:14:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 761 states have (on average 2.320630749014455) internal successors, (1766), 766 states have internal predecessors, (1766), 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) [2022-11-02 20:14:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1766 transitions. [2022-11-02 20:14:57,439 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1766 transitions. Word has length 33 [2022-11-02 20:14:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:57,440 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 1766 transitions. [2022-11-02 20:14:57,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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) [2022-11-02 20:14:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1766 transitions. [2022-11-02 20:14:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:14:57,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:57,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:57,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 20:14:57,442 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:57,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1293899151, now seen corresponding path program 1 times [2022-11-02 20:14:57,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:57,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833202118] [2022-11-02 20:14:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:57,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:57,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:57,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833202118] [2022-11-02 20:14:57,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833202118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:57,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:57,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:14:57,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144098062] [2022-11-02 20:14:57,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:57,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:14:57,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:57,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:14:57,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:57,976 INFO L87 Difference]: Start difference. First operand 767 states and 1766 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2022-11-02 20:14:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:58,400 INFO L93 Difference]: Finished difference Result 818 states and 1848 transitions. [2022-11-02 20:14:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:14:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) Word has length 33 [2022-11-02 20:14:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:58,402 INFO L225 Difference]: With dead ends: 818 [2022-11-02 20:14:58,402 INFO L226 Difference]: Without dead ends: 818 [2022-11-02 20:14:58,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:14:58,403 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 251 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:58,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 25 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-11-02 20:14:58,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 796. [2022-11-02 20:14:58,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 790 states have (on average 2.293670886075949) internal successors, (1812), 795 states have internal predecessors, (1812), 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) [2022-11-02 20:14:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1812 transitions. [2022-11-02 20:14:58,420 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1812 transitions. Word has length 33 [2022-11-02 20:14:58,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:58,421 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1812 transitions. [2022-11-02 20:14:58,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2022-11-02 20:14:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1812 transitions. [2022-11-02 20:14:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:14:58,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:58,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:58,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 20:14:58,423 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:14:58,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2104835606, now seen corresponding path program 2 times [2022-11-02 20:14:58,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:58,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763572620] [2022-11-02 20:14:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:58,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:00,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:00,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763572620] [2022-11-02 20:15:00,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763572620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:00,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:00,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:15:00,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567352178] [2022-11-02 20:15:00,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:00,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:15:00,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:15:00,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:15:00,170 INFO L87 Difference]: Start difference. First operand 796 states and 1812 transitions. Second operand has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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) [2022-11-02 20:15:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:01,576 INFO L93 Difference]: Finished difference Result 1058 states and 2401 transitions. [2022-11-02 20:15:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:15:01,576 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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) Word has length 33 [2022-11-02 20:15:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:01,578 INFO L225 Difference]: With dead ends: 1058 [2022-11-02 20:15:01,578 INFO L226 Difference]: Without dead ends: 1058 [2022-11-02 20:15:01,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:15:01,579 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 153 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:01,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 112 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:15:01,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-11-02 20:15:01,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 781. [2022-11-02 20:15:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 775 states have (on average 2.2993548387096774) internal successors, (1782), 780 states have internal predecessors, (1782), 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) [2022-11-02 20:15:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1782 transitions. [2022-11-02 20:15:01,592 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1782 transitions. Word has length 33 [2022-11-02 20:15:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:01,592 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1782 transitions. [2022-11-02 20:15:01,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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) [2022-11-02 20:15:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1782 transitions. [2022-11-02 20:15:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:15:01,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:01,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:01,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-02 20:15:01,595 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:15:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:01,596 INFO L85 PathProgramCache]: Analyzing trace with hash 843613242, now seen corresponding path program 3 times [2022-11-02 20:15:01,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:01,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523161950] [2022-11-02 20:15:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:01,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:03,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:03,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523161950] [2022-11-02 20:15:03,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523161950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:03,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:03,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:15:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839128751] [2022-11-02 20:15:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:03,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:15:03,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:03,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:15:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:15:03,938 INFO L87 Difference]: Start difference. First operand 781 states and 1782 transitions. Second operand has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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) [2022-11-02 20:15:05,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:05,562 INFO L93 Difference]: Finished difference Result 976 states and 2217 transitions. [2022-11-02 20:15:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:15:05,563 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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) Word has length 33 [2022-11-02 20:15:05,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:05,564 INFO L225 Difference]: With dead ends: 976 [2022-11-02 20:15:05,564 INFO L226 Difference]: Without dead ends: 976 [2022-11-02 20:15:05,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:15:05,565 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 160 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:05,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 88 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:15:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-11-02 20:15:05,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 714. [2022-11-02 20:15:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 708 states have (on average 2.2994350282485874) internal successors, (1628), 713 states have internal predecessors, (1628), 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) [2022-11-02 20:15:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1628 transitions. [2022-11-02 20:15:05,577 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1628 transitions. Word has length 33 [2022-11-02 20:15:05,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:05,577 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 1628 transitions. [2022-11-02 20:15:05,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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) [2022-11-02 20:15:05,577 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1628 transitions. [2022-11-02 20:15:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:15:05,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:05,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:05,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-02 20:15:05,578 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:15:05,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:05,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2078087932, now seen corresponding path program 4 times [2022-11-02 20:15:05,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:05,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193563192] [2022-11-02 20:15:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:05,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:07,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:07,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193563192] [2022-11-02 20:15:07,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193563192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:07,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:07,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:15:07,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510684735] [2022-11-02 20:15:07,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:07,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:15:07,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:15:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:15:07,354 INFO L87 Difference]: Start difference. First operand 714 states and 1628 transitions. Second operand has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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) [2022-11-02 20:15:08,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:08,559 INFO L93 Difference]: Finished difference Result 850 states and 1925 transitions. [2022-11-02 20:15:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:15:08,559 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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) Word has length 33 [2022-11-02 20:15:08,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:08,560 INFO L225 Difference]: With dead ends: 850 [2022-11-02 20:15:08,560 INFO L226 Difference]: Without dead ends: 850 [2022-11-02 20:15:08,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:15:08,561 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 186 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:08,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 90 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:15:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-11-02 20:15:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 668. [2022-11-02 20:15:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 662 states have (on average 2.29607250755287) internal successors, (1520), 667 states have internal predecessors, (1520), 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) [2022-11-02 20:15:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1520 transitions. [2022-11-02 20:15:08,571 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1520 transitions. Word has length 33 [2022-11-02 20:15:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:08,571 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1520 transitions. [2022-11-02 20:15:08,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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) [2022-11-02 20:15:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1520 transitions. [2022-11-02 20:15:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:15:08,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:08,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:08,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-02 20:15:08,579 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:15:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2078087991, now seen corresponding path program 2 times [2022-11-02 20:15:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:08,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936594723] [2022-11-02 20:15:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:08,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:09,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:09,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936594723] [2022-11-02 20:15:09,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936594723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:09,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:09,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:15:09,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330551945] [2022-11-02 20:15:09,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:09,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:15:09,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:09,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:15:09,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:15:09,160 INFO L87 Difference]: Start difference. First operand 668 states and 1520 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2022-11-02 20:15:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:09,518 INFO L93 Difference]: Finished difference Result 660 states and 1503 transitions. [2022-11-02 20:15:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:15:09,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) Word has length 33 [2022-11-02 20:15:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:09,519 INFO L225 Difference]: With dead ends: 660 [2022-11-02 20:15:09,519 INFO L226 Difference]: Without dead ends: 660 [2022-11-02 20:15:09,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:15:09,520 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 181 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:09,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 25 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:15:09,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-11-02 20:15:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 631. [2022-11-02 20:15:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 626 states have (on average 2.3146964856230032) internal successors, (1449), 630 states have internal predecessors, (1449), 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) [2022-11-02 20:15:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1449 transitions. [2022-11-02 20:15:09,528 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1449 transitions. Word has length 33 [2022-11-02 20:15:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:09,529 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 1449 transitions. [2022-11-02 20:15:09,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2022-11-02 20:15:09,529 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1449 transitions. [2022-11-02 20:15:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:15:09,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:09,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:09,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-02 20:15:09,530 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:15:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash -780853918, now seen corresponding path program 1 times [2022-11-02 20:15:09,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:09,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263360110] [2022-11-02 20:15:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:09,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:10,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:10,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263360110] [2022-11-02 20:15:10,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263360110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:10,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:10,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:15:10,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235759428] [2022-11-02 20:15:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:10,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:15:10,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:15:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:15:10,904 INFO L87 Difference]: Start difference. First operand 631 states and 1449 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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) [2022-11-02 20:15:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:11,694 INFO L93 Difference]: Finished difference Result 971 states and 2202 transitions. [2022-11-02 20:15:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:15:11,694 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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) Word has length 36 [2022-11-02 20:15:11,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:11,695 INFO L225 Difference]: With dead ends: 971 [2022-11-02 20:15:11,696 INFO L226 Difference]: Without dead ends: 971 [2022-11-02 20:15:11,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:15:11,696 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 209 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:11,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 50 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:15:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-11-02 20:15:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 925. [2022-11-02 20:15:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 920 states have (on average 2.3173913043478263) internal successors, (2132), 924 states have internal predecessors, (2132), 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) [2022-11-02 20:15:11,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 2132 transitions. [2022-11-02 20:15:11,708 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 2132 transitions. Word has length 36 [2022-11-02 20:15:11,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:11,708 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 2132 transitions. [2022-11-02 20:15:11,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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) [2022-11-02 20:15:11,708 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 2132 transitions. [2022-11-02 20:15:11,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:15:11,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:11,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:11,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-02 20:15:11,710 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-02 20:15:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash -780853917, now seen corresponding path program 1 times [2022-11-02 20:15:11,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:11,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531798370] [2022-11-02 20:15:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:11,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat