./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/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_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/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_0c66e4e8-6928-4433-9106-ef11ede9bfca/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 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 --- 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 21:02:55,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:02:55,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:02:55,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:02:55,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:02:55,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:02:55,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:02:55,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:02:55,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:02:55,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:02:55,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:02:55,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:02:55,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:02:55,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:02:55,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:02:55,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:02:55,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:02:55,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:02:55,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:02:55,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:02:55,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:02:55,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:02:55,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:02:55,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:02:55,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:02:55,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:02:55,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:02:55,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:02:55,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:02:55,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:02:55,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:02:55,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:02:55,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:02:55,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:02:55,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:02:55,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:02:55,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:02:55,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:02:55,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:02:55,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:02:55,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:02:55,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 21:02:55,497 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:02:55,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:02:55,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:02:55,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:02:55,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:02:55,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:02:55,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:02:55,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:02:55,501 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:02:55,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:02:55,501 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:02:55,502 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:02:55,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:02:55,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:02:55,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:02:55,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:02:55,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:02:55,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:02:55,503 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 21:02:55,503 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:02:55,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:02:55,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:02:55,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:02:55,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:02:55,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:02:55,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:02:55,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:02:55,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:02:55,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:02:55,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:02:55,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:02:55,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:02:55,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:02:55,507 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_0c66e4e8-6928-4433-9106-ef11ede9bfca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 [2022-11-02 21:02:55,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:02:55,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:02:55,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:02:55,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:02:55,812 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:02:55,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-11-02 21:02:55,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/data/7d7fed101/49b4a7d56625463bb834371ba282a3ed/FLAGd243e5bd9 [2022-11-02 21:02:56,447 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:02:56,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-11-02 21:02:56,462 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/data/7d7fed101/49b4a7d56625463bb834371ba282a3ed/FLAGd243e5bd9 [2022-11-02 21:02:56,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/data/7d7fed101/49b4a7d56625463bb834371ba282a3ed [2022-11-02 21:02:56,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:02:56,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:02:56,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:02:56,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:02:56,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:02:56,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:02:56" (1/1) ... [2022-11-02 21:02:56,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67455cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:56, skipping insertion in model container [2022-11-02 21:02:56,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:02:56" (1/1) ... [2022-11-02 21:02:56,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:02:56,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:02:57,278 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_0c66e4e8-6928-4433-9106-ef11ede9bfca/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-11-02 21:02:57,469 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_0c66e4e8-6928-4433-9106-ef11ede9bfca/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-11-02 21:02:57,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:02:57,484 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:02:57,509 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_0c66e4e8-6928-4433-9106-ef11ede9bfca/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-11-02 21:02:57,569 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_0c66e4e8-6928-4433-9106-ef11ede9bfca/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-11-02 21:02:57,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:02:57,607 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:02:57,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57 WrapperNode [2022-11-02 21:02:57,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:02:57,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:02:57,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:02:57,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:02:57,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,759 INFO L138 Inliner]: procedures = 177, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1412 [2022-11-02 21:02:57,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:02:57,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:02:57,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:02:57,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:02:57,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:02:57,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:02:57,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:02:57,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:02:57,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (1/1) ... [2022-11-02 21:02:57,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:02:57,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:57,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:02:58,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:02:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:02:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 21:02:58,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 21:02:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:02:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 21:02:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 21:02:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:02:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:02:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 21:02:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:02:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 21:02:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 21:02:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:02:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:02:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:02:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:02:58,312 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:02:58,313 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:00,417 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:00,437 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:00,437 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-11-02 21:03:00,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:00 BoogieIcfgContainer [2022-11-02 21:03:00,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:00,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:00,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:00,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:00,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:02:56" (1/3) ... [2022-11-02 21:03:00,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b048c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:00, skipping insertion in model container [2022-11-02 21:03:00,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:57" (2/3) ... [2022-11-02 21:03:00,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b048c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:00, skipping insertion in model container [2022-11-02 21:03:00,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:00" (3/3) ... [2022-11-02 21:03:00,458 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-1.i [2022-11-02 21:03:00,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:00,478 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-02 21:03:00,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:00,569 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;@16ecdff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:00,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-02 21:03:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 273 states, 249 states have (on average 1.7108433734939759) internal successors, (426), 264 states have internal predecessors, (426), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 21:03:00,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:03:00,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:00,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 21:03:00,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:00,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2022-11-02 21:03:00,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:00,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444976327] [2022-11-02 21:03:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:00,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:00,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:00,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787506823] [2022-11-02 21:03:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:00,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:00,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:00,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:00,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:03:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:00,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:03:00,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:00,964 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 21:03:00,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:00,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:00,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444976327] [2022-11-02 21:03:00,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:00,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787506823] [2022-11-02 21:03:00,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787506823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:00,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:00,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465138471] [2022-11-02 21:03:00,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:00,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:00,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:01,016 INFO L87 Difference]: Start difference. First operand has 273 states, 249 states have (on average 1.7108433734939759) internal successors, (426), 264 states have internal predecessors, (426), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 21:03:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:01,172 INFO L93 Difference]: Finished difference Result 796 states and 1338 transitions. [2022-11-02 21:03:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:01,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 21:03:01,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:01,189 INFO L225 Difference]: With dead ends: 796 [2022-11-02 21:03:01,189 INFO L226 Difference]: Without dead ends: 521 [2022-11-02 21:03:01,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 21:03:01,197 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 314 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:01,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 719 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-02 21:03:01,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 341. [2022-11-02 21:03:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 315 states have (on average 1.3460317460317461) internal successors, (424), 332 states have internal predecessors, (424), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 21:03:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 456 transitions. [2022-11-02 21:03:01,292 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 456 transitions. Word has length 6 [2022-11-02 21:03:01,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:01,292 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 456 transitions. [2022-11-02 21:03:01,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 21:03:01,293 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 456 transitions. [2022-11-02 21:03:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:03:01,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:01,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 21:03:01,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:01,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 21:03:01,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:01,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:01,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1126331241, now seen corresponding path program 1 times [2022-11-02 21:03:01,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:01,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680351813] [2022-11-02 21:03:01,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:01,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:01,530 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:01,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553571893] [2022-11-02 21:03:01,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:01,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:01,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:01,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:01,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:03:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:01,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:01,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:01,752 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 21:03:01,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:01,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:01,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680351813] [2022-11-02 21:03:01,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:01,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553571893] [2022-11-02 21:03:01,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553571893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:01,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:01,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:03:01,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393758136] [2022-11-02 21:03:01,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:01,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:01,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:01,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:01,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:01,762 INFO L87 Difference]: Start difference. First operand 341 states and 456 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 21:03:01,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:01,849 INFO L93 Difference]: Finished difference Result 522 states and 688 transitions. [2022-11-02 21:03:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:01,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 21:03:01,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:01,853 INFO L225 Difference]: With dead ends: 522 [2022-11-02 21:03:01,853 INFO L226 Difference]: Without dead ends: 519 [2022-11-02 21:03:01,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 21:03:01,858 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 308 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:01,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 686 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:03:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-02 21:03:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 345. [2022-11-02 21:03:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 319 states have (on average 1.3385579937304075) internal successors, (427), 336 states have internal predecessors, (427), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 21:03:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 459 transitions. [2022-11-02 21:03:01,894 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 459 transitions. Word has length 6 [2022-11-02 21:03:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:01,894 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 459 transitions. [2022-11-02 21:03:01,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 21:03:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 459 transitions. [2022-11-02 21:03:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 21:03:01,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:01,904 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, 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, 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 21:03:01,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:02,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:02,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:02,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2022-11-02 21:03:02,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:02,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566534451] [2022-11-02 21:03:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:02,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:02,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:02,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496277025] [2022-11-02 21:03:02,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:02,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:02,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:02,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:02,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:03:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:03,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:03,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:03,794 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 21:03:03,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:03,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:03,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566534451] [2022-11-02 21:03:03,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:03,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496277025] [2022-11-02 21:03:03,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496277025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:03,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:03,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:03,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932722744] [2022-11-02 21:03:03,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:03,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:03,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:03,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:03,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:03,797 INFO L87 Difference]: Start difference. First operand 345 states and 459 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 21:03:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:03,892 INFO L93 Difference]: Finished difference Result 705 states and 943 transitions. [2022-11-02 21:03:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2022-11-02 21:03:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:03,905 INFO L225 Difference]: With dead ends: 705 [2022-11-02 21:03:03,905 INFO L226 Difference]: Without dead ends: 366 [2022-11-02 21:03:03,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 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 21:03:03,908 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 9 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:03,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 645 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-02 21:03:03,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2022-11-02 21:03:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 339 states have (on average 1.3185840707964602) internal successors, (447), 356 states have internal predecessors, (447), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 21:03:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 479 transitions. [2022-11-02 21:03:03,941 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 479 transitions. Word has length 103 [2022-11-02 21:03:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:03,941 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 479 transitions. [2022-11-02 21:03:03,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 21:03:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 479 transitions. [2022-11-02 21:03:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 21:03:03,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:03,945 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, 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, 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 21:03:04,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:04,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:04,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:04,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:04,147 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2022-11-02 21:03:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:04,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146144961] [2022-11-02 21:03:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:04,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:04,391 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:04,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686665407] [2022-11-02 21:03:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:04,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:04,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:04,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:04,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:03:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:05,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 2980 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:05,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:06,031 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 21:03:06,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:06,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:06,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146144961] [2022-11-02 21:03:06,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:06,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686665407] [2022-11-02 21:03:06,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686665407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:06,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:06,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:06,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096653463] [2022-11-02 21:03:06,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:06,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:06,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:06,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:06,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:06,035 INFO L87 Difference]: Start difference. First operand 365 states and 479 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 21:03:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:06,151 INFO L93 Difference]: Finished difference Result 745 states and 983 transitions. [2022-11-02 21:03:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:06,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2022-11-02 21:03:06,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:06,154 INFO L225 Difference]: With dead ends: 745 [2022-11-02 21:03:06,154 INFO L226 Difference]: Without dead ends: 386 [2022-11-02 21:03:06,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 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 21:03:06,158 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 9 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:06,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 645 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-02 21:03:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 385. [2022-11-02 21:03:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 359 states have (on average 1.3008356545961002) internal successors, (467), 376 states have internal predecessors, (467), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 21:03:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 499 transitions. [2022-11-02 21:03:06,197 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 499 transitions. Word has length 103 [2022-11-02 21:03:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:06,198 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 499 transitions. [2022-11-02 21:03:06,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 21:03:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 499 transitions. [2022-11-02 21:03:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 21:03:06,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:06,202 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, 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, 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 21:03:06,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:06,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:06,415 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:06,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:06,415 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2022-11-02 21:03:06,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:06,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330958908] [2022-11-02 21:03:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:06,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:06,653 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:06,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811687006] [2022-11-02 21:03:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:06,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:06,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:06,655 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:06,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:03:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:08,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 2982 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:08,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:08,350 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 21:03:08,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:08,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:08,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330958908] [2022-11-02 21:03:08,351 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:08,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811687006] [2022-11-02 21:03:08,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811687006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:08,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:08,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:08,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196375763] [2022-11-02 21:03:08,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:08,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:08,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:08,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:08,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:08,355 INFO L87 Difference]: Start difference. First operand 385 states and 499 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 21:03:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:08,462 INFO L93 Difference]: Finished difference Result 755 states and 983 transitions. [2022-11-02 21:03:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:08,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2022-11-02 21:03:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:08,465 INFO L225 Difference]: With dead ends: 755 [2022-11-02 21:03:08,465 INFO L226 Difference]: Without dead ends: 376 [2022-11-02 21:03:08,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 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 21:03:08,468 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 309 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:08,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 677 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-02 21:03:08,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 371. [2022-11-02 21:03:08,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 345 states have (on average 1.2927536231884058) internal successors, (446), 362 states have internal predecessors, (446), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 21:03:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 478 transitions. [2022-11-02 21:03:08,488 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 478 transitions. Word has length 103 [2022-11-02 21:03:08,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:08,488 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 478 transitions. [2022-11-02 21:03:08,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 21:03:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 478 transitions. [2022-11-02 21:03:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 21:03:08,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:08,492 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, 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, 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 21:03:08,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:08,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:08,709 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:08,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2022-11-02 21:03:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:08,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657571968] [2022-11-02 21:03:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:09,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:09,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484858556] [2022-11-02 21:03:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:09,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:09,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:09,014 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:09,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:03:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:10,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:10,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:10,784 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 21:03:10,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:10,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:10,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657571968] [2022-11-02 21:03:10,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:10,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484858556] [2022-11-02 21:03:10,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484858556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:10,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:10,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:10,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916582138] [2022-11-02 21:03:10,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:10,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:10,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:10,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:10,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:10,793 INFO L87 Difference]: Start difference. First operand 371 states and 478 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 21:03:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:10,900 INFO L93 Difference]: Finished difference Result 816 states and 1050 transitions. [2022-11-02 21:03:10,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:10,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2022-11-02 21:03:10,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:10,903 INFO L225 Difference]: With dead ends: 816 [2022-11-02 21:03:10,903 INFO L226 Difference]: Without dead ends: 451 [2022-11-02 21:03:10,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 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 21:03:10,906 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 302 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:10,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 972 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-02 21:03:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 357. [2022-11-02 21:03:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 331 states have (on average 1.283987915407855) internal successors, (425), 348 states have internal predecessors, (425), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 21:03:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 457 transitions. [2022-11-02 21:03:10,925 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 457 transitions. Word has length 103 [2022-11-02 21:03:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:10,926 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 457 transitions. [2022-11-02 21:03:10,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 21:03:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 457 transitions. [2022-11-02 21:03:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 21:03:10,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:10,929 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, 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, 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 21:03:10,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:11,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 21:03:11,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:11,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:11,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2022-11-02 21:03:11,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:11,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401630288] [2022-11-02 21:03:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:11,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:11,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:11,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199421631] [2022-11-02 21:03:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:11,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:11,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:11,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:11,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:03:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:13,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:13,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:13,439 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 21:03:13,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:13,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:13,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401630288] [2022-11-02 21:03:13,440 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:13,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199421631] [2022-11-02 21:03:13,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199421631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:13,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:13,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:13,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901326422] [2022-11-02 21:03:13,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:13,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:13,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:13,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:13,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:13,447 INFO L87 Difference]: Start difference. First operand 357 states and 457 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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 21:03:13,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:13,527 INFO L93 Difference]: Finished difference Result 543 states and 681 transitions. [2022-11-02 21:03:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:13,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2022-11-02 21:03:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:13,535 INFO L225 Difference]: With dead ends: 543 [2022-11-02 21:03:13,535 INFO L226 Difference]: Without dead ends: 542 [2022-11-02 21:03:13,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 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 21:03:13,541 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 199 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:13,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1048 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:03:13,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-02 21:03:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 538. [2022-11-02 21:03:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 506 states have (on average 1.2529644268774704) internal successors, (634), 523 states have internal predecessors, (634), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-02 21:03:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 678 transitions. [2022-11-02 21:03:13,570 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 678 transitions. Word has length 103 [2022-11-02 21:03:13,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:13,572 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 678 transitions. [2022-11-02 21:03:13,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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 21:03:13,572 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 678 transitions. [2022-11-02 21:03:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-02 21:03:13,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:13,586 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, 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, 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 21:03:13,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:13,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:13,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:13,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2022-11-02 21:03:13,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:13,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467703355] [2022-11-02 21:03:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:13,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:14,087 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:14,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499384913] [2022-11-02 21:03:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:14,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:14,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:14,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:14,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:03:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:16,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:16,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:16,281 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 21:03:16,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:16,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467703355] [2022-11-02 21:03:16,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499384913] [2022-11-02 21:03:16,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499384913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:16,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:16,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849792508] [2022-11-02 21:03:16,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:16,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:16,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:16,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:16,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:16,284 INFO L87 Difference]: Start difference. First operand 538 states and 678 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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 21:03:16,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:16,360 INFO L93 Difference]: Finished difference Result 538 states and 678 transitions. [2022-11-02 21:03:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:16,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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 104 [2022-11-02 21:03:16,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:16,364 INFO L225 Difference]: With dead ends: 538 [2022-11-02 21:03:16,364 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 21:03:16,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 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 21:03:16,366 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 202 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:16,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 652 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:03:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 21:03:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 535. [2022-11-02 21:03:16,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 505 states have (on average 1.2495049504950495) internal successors, (631), 520 states have internal predecessors, (631), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-02 21:03:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 675 transitions. [2022-11-02 21:03:16,396 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 675 transitions. Word has length 104 [2022-11-02 21:03:16,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:16,397 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 675 transitions. [2022-11-02 21:03:16,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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 21:03:16,397 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 675 transitions. [2022-11-02 21:03:16,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 21:03:16,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:16,399 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, 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, 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, 1, 1, 1, 1, 1] [2022-11-02 21:03:16,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-02 21:03:16,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:16,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2022-11-02 21:03:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:16,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538081479] [2022-11-02 21:03:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:16,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:16,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:16,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936750554] [2022-11-02 21:03:16,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:16,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:16,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:16,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:16,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:03:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:18,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:03:18,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:19,295 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 21:03:19,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:19,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:19,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538081479] [2022-11-02 21:03:19,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:19,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936750554] [2022-11-02 21:03:19,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936750554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:19,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:19,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:19,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597865664] [2022-11-02 21:03:19,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:19,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:19,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:19,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:19,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:19,299 INFO L87 Difference]: Start difference. First operand 535 states and 675 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 21:03:19,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:19,385 INFO L93 Difference]: Finished difference Result 1001 states and 1288 transitions. [2022-11-02 21:03:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:19,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2022-11-02 21:03:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:19,388 INFO L225 Difference]: With dead ends: 1001 [2022-11-02 21:03:19,388 INFO L226 Difference]: Without dead ends: 613 [2022-11-02 21:03:19,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 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 21:03:19,390 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 138 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:19,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 703 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-02 21:03:19,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 609. [2022-11-02 21:03:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 569 states have (on average 1.2688927943760984) internal successors, (722), 594 states have internal predecessors, (722), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-02 21:03:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 786 transitions. [2022-11-02 21:03:19,419 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 786 transitions. Word has length 108 [2022-11-02 21:03:19,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:19,420 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 786 transitions. [2022-11-02 21:03:19,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 21:03:19,420 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 786 transitions. [2022-11-02 21:03:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 21:03:19,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:19,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:19,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:19,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:19,635 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2105513597, now seen corresponding path program 1 times [2022-11-02 21:03:19,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841522152] [2022-11-02 21:03:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:19,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:19,797 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:19,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45269171] [2022-11-02 21:03:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:19,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:19,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:19,805 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:19,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:03:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:21,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 2121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:03:21,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:03:21,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:21,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841522152] [2022-11-02 21:03:21,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45269171] [2022-11-02 21:03:21,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45269171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:21,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:21,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501126059] [2022-11-02 21:03:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:21,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:21,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:21,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:21,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:21,900 INFO L87 Difference]: Start difference. First operand 609 states and 786 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:03:21,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:21,980 INFO L93 Difference]: Finished difference Result 1158 states and 1504 transitions. [2022-11-02 21:03:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:21,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 123 [2022-11-02 21:03:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:21,986 INFO L225 Difference]: With dead ends: 1158 [2022-11-02 21:03:21,987 INFO L226 Difference]: Without dead ends: 607 [2022-11-02 21:03:21,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 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 21:03:21,989 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 15 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:21,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 651 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-11-02 21:03:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2022-11-02 21:03:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 567 states have (on average 1.2680776014109347) internal successors, (719), 592 states have internal predecessors, (719), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-02 21:03:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 783 transitions. [2022-11-02 21:03:22,016 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 783 transitions. Word has length 123 [2022-11-02 21:03:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:22,016 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 783 transitions. [2022-11-02 21:03:22,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:03:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 783 transitions. [2022-11-02 21:03:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-02 21:03:22,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:22,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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, 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, 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 21:03:22,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:22,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:03:22,235 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:22,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:22,235 INFO L85 PathProgramCache]: Analyzing trace with hash -944295870, now seen corresponding path program 1 times [2022-11-02 21:03:22,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:22,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632115349] [2022-11-02 21:03:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:22,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:22,334 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:22,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253061045] [2022-11-02 21:03:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:22,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:22,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:22,336 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:22,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 21:03:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:25,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:03:25,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:03:25,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:25,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:25,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632115349] [2022-11-02 21:03:25,907 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:25,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253061045] [2022-11-02 21:03:25,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253061045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:25,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:25,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:25,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416381125] [2022-11-02 21:03:25,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:25,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:25,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:25,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:25,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:25,910 INFO L87 Difference]: Start difference. First operand 607 states and 783 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:03:26,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:26,040 INFO L93 Difference]: Finished difference Result 1165 states and 1523 transitions. [2022-11-02 21:03:26,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:26,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2022-11-02 21:03:26,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:26,044 INFO L225 Difference]: With dead ends: 1165 [2022-11-02 21:03:26,044 INFO L226 Difference]: Without dead ends: 610 [2022-11-02 21:03:26,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 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 21:03:26,046 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 2 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:26,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 983 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-11-02 21:03:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-11-02 21:03:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 569 states have (on average 1.2688927943760984) internal successors, (722), 595 states have internal predecessors, (722), 32 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2022-11-02 21:03:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 790 transitions. [2022-11-02 21:03:26,078 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 790 transitions. Word has length 138 [2022-11-02 21:03:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:26,078 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 790 transitions. [2022-11-02 21:03:26,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:03:26,079 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 790 transitions. [2022-11-02 21:03:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 21:03:26,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:26,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 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, 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 21:03:26,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:26,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 21:03:26,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1074478014, now seen corresponding path program 1 times [2022-11-02 21:03:26,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:26,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822738924] [2022-11-02 21:03:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:26,420 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:26,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424745976] [2022-11-02 21:03:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:26,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:26,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:26,423 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:26,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 21:03:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:48,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:03:48,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:03:48,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 21:03:48,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:48,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822738924] [2022-11-02 21:03:48,401 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:48,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424745976] [2022-11-02 21:03:48,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424745976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:48,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:48,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 21:03:48,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350843600] [2022-11-02 21:03:48,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:48,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:03:48,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:03:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:48,404 INFO L87 Difference]: Start difference. First operand 610 states and 790 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:03:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:48,629 INFO L93 Difference]: Finished difference Result 1179 states and 1553 transitions. [2022-11-02 21:03:48,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:03:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 142 [2022-11-02 21:03:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:48,633 INFO L225 Difference]: With dead ends: 1179 [2022-11-02 21:03:48,633 INFO L226 Difference]: Without dead ends: 619 [2022-11-02 21:03:48,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:03:48,635 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 16 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:48,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1613 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-11-02 21:03:48,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2022-11-02 21:03:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 577 states have (on average 1.2720970537261698) internal successors, (734), 603 states have internal predecessors, (734), 32 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2022-11-02 21:03:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 802 transitions. [2022-11-02 21:03:48,663 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 802 transitions. Word has length 142 [2022-11-02 21:03:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:48,663 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 802 transitions. [2022-11-02 21:03:48,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:03:48,663 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 802 transitions. [2022-11-02 21:03:48,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-02 21:03:48,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:48,665 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 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, 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, 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, 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 21:03:48,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:48,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 21:03:48,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:03:48,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:48,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1045069566, now seen corresponding path program 2 times [2022-11-02 21:03:48,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:48,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009045128] [2022-11-02 21:03:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:48,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:48,982 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:48,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142490377] [2022-11-02 21:03:48,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:03:48,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:48,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:48,983 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:49,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 21:04:08,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:04:08,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:08,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:04:08,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 83 proven. 25 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:04:08,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-02 21:04:08,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:08,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009045128] [2022-11-02 21:04:08,833 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:04:08,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142490377] [2022-11-02 21:04:08,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142490377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:08,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:08,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2022-11-02 21:04:08,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916379699] [2022-11-02 21:04:08,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:08,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:04:08,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:08,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:04:08,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:04:08,835 INFO L87 Difference]: Start difference. First operand 619 states and 802 transitions. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:04:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:09,566 INFO L93 Difference]: Finished difference Result 1239 states and 1643 transitions. [2022-11-02 21:04:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 21:04:09,567 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 150 [2022-11-02 21:04:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:09,570 INFO L225 Difference]: With dead ends: 1239 [2022-11-02 21:04:09,571 INFO L226 Difference]: Without dead ends: 628 [2022-11-02 21:04:09,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:04:09,573 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 336 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:09,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 2240 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:04:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-02 21:04:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 619. [2022-11-02 21:04:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 577 states have (on average 1.2755632582322356) internal successors, (736), 603 states have internal predecessors, (736), 32 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2022-11-02 21:04:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 804 transitions. [2022-11-02 21:04:09,609 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 804 transitions. Word has length 150 [2022-11-02 21:04:09,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:09,610 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 804 transitions. [2022-11-02 21:04:09,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:04:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 804 transitions. [2022-11-02 21:04:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-02 21:04:09,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:09,613 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 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, 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, 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, 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 21:04:09,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:09,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:09,827 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:04:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash 704483522, now seen corresponding path program 3 times [2022-11-02 21:04:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:09,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505500945] [2022-11-02 21:04:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:09,946 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:04:09,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352236994] [2022-11-02 21:04:09,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:04:09,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:09,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:09,948 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:09,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 21:04:12,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:04:12,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:12,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:12,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 21:04:12,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:12,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:12,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505500945] [2022-11-02 21:04:12,536 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:04:12,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352236994] [2022-11-02 21:04:12,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352236994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:12,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:12,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:12,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723574055] [2022-11-02 21:04:12,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:12,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:12,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:12,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:12,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:12,539 INFO L87 Difference]: Start difference. First operand 619 states and 804 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:04:12,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:12,695 INFO L93 Difference]: Finished difference Result 624 states and 807 transitions. [2022-11-02 21:04:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:12,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 162 [2022-11-02 21:04:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:12,699 INFO L225 Difference]: With dead ends: 624 [2022-11-02 21:04:12,699 INFO L226 Difference]: Without dead ends: 621 [2022-11-02 21:04:12,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:12,700 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 758 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:12,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1554 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-11-02 21:04:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 525. [2022-11-02 21:04:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 496 states have (on average 1.2439516129032258) internal successors, (617), 509 states have internal predecessors, (617), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-02 21:04:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 665 transitions. [2022-11-02 21:04:12,730 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 665 transitions. Word has length 162 [2022-11-02 21:04:12,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:12,731 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 665 transitions. [2022-11-02 21:04:12,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:04:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 665 transitions. [2022-11-02 21:04:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 21:04:12,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:12,734 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:12,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:12,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:12,951 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:04:12,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash 392962568, now seen corresponding path program 1 times [2022-11-02 21:04:12,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:12,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207054979] [2022-11-02 21:04:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:12,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:13,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:04:13,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540264660] [2022-11-02 21:04:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:13,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:13,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:13,087 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:13,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 21:04:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:15,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:04:15,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-02 21:04:15,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:15,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:15,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207054979] [2022-11-02 21:04:15,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:04:15,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540264660] [2022-11-02 21:04:15,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540264660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:15,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:15,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:15,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952890698] [2022-11-02 21:04:15,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:15,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:15,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:15,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:15,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:15,211 INFO L87 Difference]: Start difference. First operand 525 states and 665 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:04:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:15,304 INFO L93 Difference]: Finished difference Result 705 states and 917 transitions. [2022-11-02 21:04:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:15,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 200 [2022-11-02 21:04:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:15,307 INFO L225 Difference]: With dead ends: 705 [2022-11-02 21:04:15,308 INFO L226 Difference]: Without dead ends: 567 [2022-11-02 21:04:15,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 198 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 21:04:15,309 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 10 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:15,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 599 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-02 21:04:15,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 565. [2022-11-02 21:04:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 536 states have (on average 1.2257462686567164) internal successors, (657), 549 states have internal predecessors, (657), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-02 21:04:15,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 705 transitions. [2022-11-02 21:04:15,336 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 705 transitions. Word has length 200 [2022-11-02 21:04:15,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:15,336 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 705 transitions. [2022-11-02 21:04:15,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:04:15,337 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 705 transitions. [2022-11-02 21:04:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 21:04:15,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:15,340 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:15,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:15,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:04:15,555 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:04:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:15,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1391398668, now seen corresponding path program 1 times [2022-11-02 21:04:15,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:15,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086004934] [2022-11-02 21:04:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:15,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:15,674 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:04:15,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433271522] [2022-11-02 21:04:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:15,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:15,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:15,676 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:15,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 21:04:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:17,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:04:17,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-02 21:04:17,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:17,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:17,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086004934] [2022-11-02 21:04:17,942 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:04:17,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433271522] [2022-11-02 21:04:17,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433271522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:17,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:17,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956640805] [2022-11-02 21:04:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:17,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:17,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:17,945 INFO L87 Difference]: Start difference. First operand 565 states and 705 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:04:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:18,038 INFO L93 Difference]: Finished difference Result 723 states and 915 transitions. [2022-11-02 21:04:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 200 [2022-11-02 21:04:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:18,041 INFO L225 Difference]: With dead ends: 723 [2022-11-02 21:04:18,041 INFO L226 Difference]: Without dead ends: 545 [2022-11-02 21:04:18,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 197 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 21:04:18,043 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 85 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:18,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 832 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-02 21:04:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 537. [2022-11-02 21:04:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 508 states have (on average 1.2106299212598426) internal successors, (615), 521 states have internal predecessors, (615), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-02 21:04:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 663 transitions. [2022-11-02 21:04:18,072 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 663 transitions. Word has length 200 [2022-11-02 21:04:18,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:18,073 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 663 transitions. [2022-11-02 21:04:18,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:04:18,073 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 663 transitions. [2022-11-02 21:04:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 21:04:18,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:18,076 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:18,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:18,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 21:04:18,303 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:04:18,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash 508549822, now seen corresponding path program 1 times [2022-11-02 21:04:18,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:18,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811596047] [2022-11-02 21:04:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:18,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:18,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:04:18,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675445879] [2022-11-02 21:04:18,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:18,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:18,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:18,421 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:18,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 21:04:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:20,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:20,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 21:04:20,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 21:04:21,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:21,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811596047] [2022-11-02 21:04:21,053 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:04:21,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675445879] [2022-11-02 21:04:21,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675445879] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:21,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:21,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 21:04:21,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541778860] [2022-11-02 21:04:21,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:21,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:04:21,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:21,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:04:21,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:21,055 INFO L87 Difference]: Start difference. First operand 537 states and 663 transitions. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:04:21,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:21,263 INFO L93 Difference]: Finished difference Result 1121 states and 1401 transitions. [2022-11-02 21:04:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:04:21,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 200 [2022-11-02 21:04:21,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:21,268 INFO L225 Difference]: With dead ends: 1121 [2022-11-02 21:04:21,268 INFO L226 Difference]: Without dead ends: 969 [2022-11-02 21:04:21,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:04:21,270 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 1486 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:21,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1574 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2022-11-02 21:04:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 722. [2022-11-02 21:04:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 687 states have (on average 1.2037845705967978) internal successors, (827), 700 states have internal predecessors, (827), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 20 states have call predecessors, (34), 28 states have call successors, (34) [2022-11-02 21:04:21,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 889 transitions. [2022-11-02 21:04:21,314 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 889 transitions. Word has length 200 [2022-11-02 21:04:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:21,314 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 889 transitions. [2022-11-02 21:04:21,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:04:21,315 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 889 transitions. [2022-11-02 21:04:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-02 21:04:21,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:21,322 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:21,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:21,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:04:21,547 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:04:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:21,547 INFO L85 PathProgramCache]: Analyzing trace with hash -230975344, now seen corresponding path program 1 times [2022-11-02 21:04:21,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:21,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534579819] [2022-11-02 21:04:21,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:21,967 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:04:21,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145738802] [2022-11-02 21:04:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:21,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:21,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:21,971 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:21,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 21:04:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 7412 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:04:25,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 21:04:26,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 21:04:27,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:27,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534579819] [2022-11-02 21:04:27,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:04:27,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145738802] [2022-11-02 21:04:27,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145738802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:27,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:27,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-02 21:04:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834898550] [2022-11-02 21:04:27,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:27,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:04:27,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:27,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:04:27,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:04:27,050 INFO L87 Difference]: Start difference. First operand 722 states and 889 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:04:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:27,406 INFO L93 Difference]: Finished difference Result 1155 states and 1438 transitions. [2022-11-02 21:04:27,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:04:27,407 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 361 [2022-11-02 21:04:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:27,412 INFO L225 Difference]: With dead ends: 1155 [2022-11-02 21:04:27,412 INFO L226 Difference]: Without dead ends: 1154 [2022-11-02 21:04:27,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:04:27,413 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 1029 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:27,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 2483 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-02 21:04:27,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 721. [2022-11-02 21:04:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 687 states have (on average 1.2023289665211063) internal successors, (826), 699 states have internal predecessors, (826), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 20 states have call predecessors, (34), 28 states have call successors, (34) [2022-11-02 21:04:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 888 transitions. [2022-11-02 21:04:27,460 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 888 transitions. Word has length 361 [2022-11-02 21:04:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:27,461 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 888 transitions. [2022-11-02 21:04:27,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:04:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 888 transitions. [2022-11-02 21:04:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-02 21:04:27,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:27,472 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:27,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:27,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 21:04:27,687 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:04:27,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:27,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1543226864, now seen corresponding path program 1 times [2022-11-02 21:04:27,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:27,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107859583] [2022-11-02 21:04:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:27,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:28,145 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:04:28,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209435639] [2022-11-02 21:04:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:28,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:28,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:28,147 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:28,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 21:04:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 7516 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:04:32,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 21:04:33,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 21:04:33,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:33,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107859583] [2022-11-02 21:04:33,501 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:04:33,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209435639] [2022-11-02 21:04:33,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209435639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:33,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:33,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:04:33,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318107068] [2022-11-02 21:04:33,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:33,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:04:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:04:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:33,505 INFO L87 Difference]: Start difference. First operand 721 states and 888 transitions. Second operand has 16 states, 16 states have (on average 42.625) internal successors, (682), 16 states have internal predecessors, (682), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:04:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:34,048 INFO L93 Difference]: Finished difference Result 2143 states and 2667 transitions. [2022-11-02 21:04:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:04:34,049 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 42.625) internal successors, (682), 16 states have internal predecessors, (682), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 404 [2022-11-02 21:04:34,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:34,056 INFO L225 Difference]: With dead ends: 2143 [2022-11-02 21:04:34,056 INFO L226 Difference]: Without dead ends: 1992 [2022-11-02 21:04:34,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:04:34,058 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 2889 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:34,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 3542 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:04:34,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-11-02 21:04:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1453. [2022-11-02 21:04:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1395 states have (on average 1.1942652329749104) internal successors, (1666), 1407 states have internal predecessors, (1666), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 44 states have call predecessors, (66), 52 states have call successors, (66) [2022-11-02 21:04:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1784 transitions. [2022-11-02 21:04:34,138 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1784 transitions. Word has length 404 [2022-11-02 21:04:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:34,139 INFO L495 AbstractCegarLoop]: Abstraction has 1453 states and 1784 transitions. [2022-11-02 21:04:34,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 42.625) internal successors, (682), 16 states have internal predecessors, (682), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:04:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1784 transitions. [2022-11-02 21:04:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2022-11-02 21:04:34,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:34,150 INFO L195 NwaCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 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, 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 21:04:34,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:34,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:34,379 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:04:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash 138553268, now seen corresponding path program 2 times [2022-11-02 21:04:34,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:34,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233287757] [2022-11-02 21:04:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:34,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:35,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:04:35,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379825351] [2022-11-02 21:04:35,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:35,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:35,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:35,601 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:35,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 21:04:40,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:04:40,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:40,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:04:40,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2022-11-02 21:04:41,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:41,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:41,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233287757] [2022-11-02 21:04:41,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:04:41,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379825351] [2022-11-02 21:04:41,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379825351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:41,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:41,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:41,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72907072] [2022-11-02 21:04:41,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:41,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:41,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:41,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:41,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:41,915 INFO L87 Difference]: Start difference. First operand 1453 states and 1784 transitions. Second operand has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:04:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:42,007 INFO L93 Difference]: Finished difference Result 1548 states and 1913 transitions. [2022-11-02 21:04:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:42,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 812 [2022-11-02 21:04:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:42,014 INFO L225 Difference]: With dead ends: 1548 [2022-11-02 21:04:42,015 INFO L226 Difference]: Without dead ends: 1547 [2022-11-02 21:04:42,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 809 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 21:04:42,016 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 130 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:42,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 725 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:04:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-02 21:04:42,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1522. [2022-11-02 21:04:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1464 states have (on average 1.1933060109289617) internal successors, (1747), 1476 states have internal predecessors, (1747), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 44 states have call predecessors, (66), 52 states have call successors, (66) [2022-11-02 21:04:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1865 transitions. [2022-11-02 21:04:42,094 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1865 transitions. Word has length 812 [2022-11-02 21:04:42,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:42,096 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 1865 transitions. [2022-11-02 21:04:42,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:04:42,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1865 transitions. [2022-11-02 21:04:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2022-11-02 21:04:42,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:42,105 INFO L195 NwaCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 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, 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 21:04:42,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:42,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:42,327 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:04:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:42,327 INFO L85 PathProgramCache]: Analyzing trace with hash 185056, now seen corresponding path program 1 times [2022-11-02 21:04:42,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:42,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349237410] [2022-11-02 21:04:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:42,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:43,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:04:43,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432078069] [2022-11-02 21:04:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:43,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:43,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:43,559 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:43,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 21:04:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:53,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 19165 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:04:53,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 21:04:54,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 21:04:55,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:55,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349237410] [2022-11-02 21:04:55,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:04:55,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432078069] [2022-11-02 21:04:55,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432078069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:55,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:55,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-02 21:04:55,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513925038] [2022-11-02 21:04:55,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:55,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:04:55,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:55,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:04:55,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:04:55,804 INFO L87 Difference]: Start difference. First operand 1522 states and 1865 transitions. Second operand has 21 states, 21 states have (on average 47.38095238095238) internal successors, (995), 21 states have internal predecessors, (995), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:04:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:56,566 INFO L93 Difference]: Finished difference Result 2906 states and 3602 transitions. [2022-11-02 21:04:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:04:56,568 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 47.38095238095238) internal successors, (995), 21 states have internal predecessors, (995), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 813 [2022-11-02 21:04:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:56,578 INFO L225 Difference]: With dead ends: 2906 [2022-11-02 21:04:56,578 INFO L226 Difference]: Without dead ends: 2686 [2022-11-02 21:04:56,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1633 GetRequests, 1594 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:04:56,580 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 4181 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4263 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:56,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4263 Valid, 3482 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:04:56,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-11-02 21:04:56,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2071. [2022-11-02 21:04:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 1995 states have (on average 1.1914786967418547) internal successors, (2377), 2007 states have internal predecessors, (2377), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 62 states have call predecessors, (90), 70 states have call successors, (90) [2022-11-02 21:04:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2537 transitions. [2022-11-02 21:04:56,700 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2537 transitions. Word has length 813 [2022-11-02 21:04:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:56,702 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2537 transitions. [2022-11-02 21:04:56,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 47.38095238095238) internal successors, (995), 21 states have internal predecessors, (995), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 21:04:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2537 transitions. [2022-11-02 21:04:56,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2022-11-02 21:04:56,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:56,718 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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, 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 21:04:56,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:56,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 21:04:56,935 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:04:56,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:56,935 INFO L85 PathProgramCache]: Analyzing trace with hash 163859173, now seen corresponding path program 2 times [2022-11-02 21:04:56,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:56,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396026487] [2022-11-02 21:04:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:56,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:58,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:04:58,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349947891] [2022-11-02 21:04:58,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:58,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:58,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:58,689 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:58,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-02 21:05:07,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:05:07,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:07,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:05:07,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-11-02 21:05:08,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:08,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:08,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396026487] [2022-11-02 21:05:08,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:05:08,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349947891] [2022-11-02 21:05:08,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349947891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:08,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:08,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:05:08,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091580438] [2022-11-02 21:05:08,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:08,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:08,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:08,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:08,898 INFO L87 Difference]: Start difference. First operand 2071 states and 2537 transitions. Second operand has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:05:09,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:09,010 INFO L93 Difference]: Finished difference Result 2071 states and 2537 transitions. [2022-11-02 21:05:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:09,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1119 [2022-11-02 21:05:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:09,022 INFO L225 Difference]: With dead ends: 2071 [2022-11-02 21:05:09,022 INFO L226 Difference]: Without dead ends: 2070 [2022-11-02 21:05:09,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 1116 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 21:05:09,164 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 151 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:09,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 603 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:09,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2022-11-02 21:05:09,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 2070. [2022-11-02 21:05:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1995 states have (on average 1.1904761904761905) internal successors, (2375), 2006 states have internal predecessors, (2375), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 62 states have call predecessors, (90), 70 states have call successors, (90) [2022-11-02 21:05:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2535 transitions. [2022-11-02 21:05:09,280 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2535 transitions. Word has length 1119 [2022-11-02 21:05:09,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:09,281 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 2535 transitions. [2022-11-02 21:05:09,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:05:09,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2535 transitions. [2022-11-02 21:05:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2022-11-02 21:05:09,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:09,298 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:09,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:09,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:09,503 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:05:09,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1591699218, now seen corresponding path program 1 times [2022-11-02 21:05:09,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:09,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244338541] [2022-11-02 21:05:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:09,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:11,381 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:05:11,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799868673] [2022-11-02 21:05:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:11,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:11,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:11,391 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:11,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-02 21:05:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:27,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 28018 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:27,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-11-02 21:05:29,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-11-02 21:05:31,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:31,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244338541] [2022-11-02 21:05:31,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:05:31,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799868673] [2022-11-02 21:05:31,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799868673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:31,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:31,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-11-02 21:05:31,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577782376] [2022-11-02 21:05:31,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:31,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:05:31,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:31,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:05:31,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:05:31,132 INFO L87 Difference]: Start difference. First operand 2070 states and 2535 transitions. Second operand has 10 states, 9 states have (on average 47.77777777777778) internal successors, (430), 10 states have internal predecessors, (430), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-02 21:05:31,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:31,614 INFO L93 Difference]: Finished difference Result 2517 states and 3095 transitions. [2022-11-02 21:05:31,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:05:31,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 47.77777777777778) internal successors, (430), 10 states have internal predecessors, (430), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1169 [2022-11-02 21:05:31,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:31,624 INFO L225 Difference]: With dead ends: 2517 [2022-11-02 21:05:31,625 INFO L226 Difference]: Without dead ends: 2516 [2022-11-02 21:05:31,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2343 GetRequests, 2328 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:05:31,626 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 755 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:31,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1271 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:31,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2022-11-02 21:05:31,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 2514. [2022-11-02 21:05:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 2406 states have (on average 1.1916043225270159) internal successors, (2867), 2447 states have internal predecessors, (2867), 100 states have call successors, (100), 6 states have call predecessors, (100), 7 states have return successors, (120), 68 states have call predecessors, (120), 100 states have call successors, (120) [2022-11-02 21:05:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3087 transitions. [2022-11-02 21:05:31,781 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3087 transitions. Word has length 1169 [2022-11-02 21:05:31,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:31,783 INFO L495 AbstractCegarLoop]: Abstraction has 2514 states and 3087 transitions. [2022-11-02 21:05:31,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 47.77777777777778) internal successors, (430), 10 states have internal predecessors, (430), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-02 21:05:31,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3087 transitions. [2022-11-02 21:05:31,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1323 [2022-11-02 21:05:31,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:31,805 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 21:05:31,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:32,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:32,019 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:05:32,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:32,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1316001359, now seen corresponding path program 2 times [2022-11-02 21:05:32,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:32,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111955538] [2022-11-02 21:05:32,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:32,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:33,924 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:05:33,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416558947] [2022-11-02 21:05:33,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:05:33,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:33,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:33,926 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:33,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-02 21:05:45,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:05:45,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:45,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:45,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5426 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5406 trivial. 0 not checked. [2022-11-02 21:05:45,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:45,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:45,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111955538] [2022-11-02 21:05:45,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:05:45,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416558947] [2022-11-02 21:05:45,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416558947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:45,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:45,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:45,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294986120] [2022-11-02 21:05:45,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:45,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:45,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:45,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:45,748 INFO L87 Difference]: Start difference. First operand 2514 states and 3087 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 21:05:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:45,848 INFO L93 Difference]: Finished difference Result 2901 states and 3568 transitions. [2022-11-02 21:05:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:45,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1322 [2022-11-02 21:05:45,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:45,865 INFO L225 Difference]: With dead ends: 2901 [2022-11-02 21:05:45,865 INFO L226 Difference]: Without dead ends: 2254 [2022-11-02 21:05:45,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1321 GetRequests, 1320 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 21:05:45,868 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 8 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:45,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 616 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2022-11-02 21:05:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2254. [2022-11-02 21:05:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 2166 states have (on average 1.1846722068328717) internal successors, (2566), 2187 states have internal predecessors, (2566), 80 states have call successors, (80), 6 states have call predecessors, (80), 7 states have return successors, (100), 64 states have call predecessors, (100), 80 states have call successors, (100) [2022-11-02 21:05:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2746 transitions. [2022-11-02 21:05:45,996 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2746 transitions. Word has length 1322 [2022-11-02 21:05:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:45,999 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 2746 transitions. [2022-11-02 21:05:45,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 21:05:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2746 transitions. [2022-11-02 21:05:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1383 [2022-11-02 21:05:46,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:46,029 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 21:05:46,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:46,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-02 21:05:46,255 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:05:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash -792675922, now seen corresponding path program 1 times [2022-11-02 21:05:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217561472] [2022-11-02 21:05:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:48,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:05:48,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247181050] [2022-11-02 21:05:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:48,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:48,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:48,242 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:48,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-02 21:06:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:07,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 28557 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:06:07,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-11-02 21:06:09,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 0 proven. 562 refuted. 0 times theorem prover too weak. 4984 trivial. 0 not checked. [2022-11-02 21:06:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217561472] [2022-11-02 21:06:11,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:06:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247181050] [2022-11-02 21:06:11,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247181050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:11,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:11,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2022-11-02 21:06:11,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471540102] [2022-11-02 21:06:11,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:11,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:06:11,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:11,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:06:11,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:06:11,691 INFO L87 Difference]: Start difference. First operand 2254 states and 2746 transitions. Second operand has 22 states, 21 states have (on average 39.76190476190476) internal successors, (835), 22 states have internal predecessors, (835), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-02 21:06:12,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:12,610 INFO L93 Difference]: Finished difference Result 2760 states and 3359 transitions. [2022-11-02 21:06:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:06:12,611 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 39.76190476190476) internal successors, (835), 22 states have internal predecessors, (835), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 1382 [2022-11-02 21:06:12,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:12,622 INFO L225 Difference]: With dead ends: 2760 [2022-11-02 21:06:12,622 INFO L226 Difference]: Without dead ends: 2759 [2022-11-02 21:06:12,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2781 GetRequests, 2742 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2022-11-02 21:06:12,624 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1780 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:12,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1785 Valid, 2047 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:06:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2022-11-02 21:06:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2758. [2022-11-02 21:06:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2634 states have (on average 1.1814730447987851) internal successors, (3112), 2685 states have internal predecessors, (3112), 110 states have call successors, (110), 12 states have call predecessors, (110), 13 states have return successors, (130), 70 states have call predecessors, (130), 110 states have call successors, (130) [2022-11-02 21:06:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 3352 transitions. [2022-11-02 21:06:12,799 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 3352 transitions. Word has length 1382 [2022-11-02 21:06:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:12,800 INFO L495 AbstractCegarLoop]: Abstraction has 2758 states and 3352 transitions. [2022-11-02 21:06:12,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 39.76190476190476) internal successors, (835), 22 states have internal predecessors, (835), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-02 21:06:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 3352 transitions. [2022-11-02 21:06:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1761 [2022-11-02 21:06:12,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:12,833 INFO L195 NwaCegarLoop]: trace histogram [24, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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 21:06:12,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:13,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-02 21:06:13,051 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:06:13,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1670309294, now seen corresponding path program 2 times [2022-11-02 21:06:13,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:13,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216283313] [2022-11-02 21:06:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:13,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:15,014 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:06:15,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768533840] [2022-11-02 21:06:15,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:06:15,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:06:15,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:06:15,019 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:06:15,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c66e4e8-6928-4433-9106-ef11ede9bfca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process