./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/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_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/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_30b9702a-ae64-46ab-a995-48b8f9c9234f/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 dc1a8bd7c922f93873ec39bdce92396c491017d4a5984ae9a59a0e03f4bb08ec --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:19:29,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:19:29,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:19:29,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:19:29,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:19:29,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:19:29,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:19:29,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:19:29,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:19:29,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:19:29,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:19:29,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:19:29,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:19:29,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:19:29,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:19:29,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:19:29,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:19:29,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:19:29,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:19:29,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:19:29,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:19:29,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:19:29,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:19:29,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:19:29,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:19:29,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:19:29,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:19:29,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:19:29,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:19:29,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:19:29,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:19:29,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:19:29,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:19:29,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:19:29,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:19:29,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:19:29,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:19:29,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:19:29,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:19:29,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:19:29,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:19:29,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:19:29,945 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:19:29,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:19:29,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:19:29,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:19:29,947 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:19:29,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:19:29,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:19:29,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:19:29,949 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:19:29,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:19:29,950 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:19:29,950 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:19:29,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:19:29,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:19:29,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:19:29,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:19:29,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:19:29,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:19:29,952 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:19:29,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:19:29,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:19:29,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:19:29,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:19:29,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:19:29,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:19:29,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:19:29,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:19:29,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:19:29,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:19:29,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:19:29,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:19:29,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:19:29,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:19:29,957 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_30b9702a-ae64-46ab-a995-48b8f9c9234f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc1a8bd7c922f93873ec39bdce92396c491017d4a5984ae9a59a0e03f4bb08ec [2022-11-02 20:19:30,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:19:30,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:19:30,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:19:30,416 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:19:30,417 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:19:30,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i [2022-11-02 20:19:30,512 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/data/08f5e610a/5dd21d181c3c44d7a2b9919cdce3cfca/FLAG7af25fd1d [2022-11-02 20:19:31,279 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:19:31,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i [2022-11-02 20:19:31,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/data/08f5e610a/5dd21d181c3c44d7a2b9919cdce3cfca/FLAG7af25fd1d [2022-11-02 20:19:31,515 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/data/08f5e610a/5dd21d181c3c44d7a2b9919cdce3cfca [2022-11-02 20:19:31,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:19:31,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:19:31,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:19:31,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:19:31,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:19:31,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:19:31" (1/1) ... [2022-11-02 20:19:31,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64dabcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:31, skipping insertion in model container [2022-11-02 20:19:31,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:19:31" (1/1) ... [2022-11-02 20:19:31,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:19:31,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:19:32,152 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_30b9702a-ae64-46ab-a995-48b8f9c9234f/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i[30035,30048] [2022-11-02 20:19:32,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:19:32,188 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:19:32,227 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_30b9702a-ae64-46ab-a995-48b8f9c9234f/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i[30035,30048] [2022-11-02 20:19:32,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:19:32,274 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:19:32,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32 WrapperNode [2022-11-02 20:19:32,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:19:32,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:19:32,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:19:32,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:19:32,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,331 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2022-11-02 20:19:32,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:19:32,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:19:32,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:19:32,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:19:32,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,362 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:19:32,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:19:32,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:19:32,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:19:32,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (1/1) ... [2022-11-02 20:19:32,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:19:32,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:19:32,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:19:32,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:19:32,483 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-02 20:19:32,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-02 20:19:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:19:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:19:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:19:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:19:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:19:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:19:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:19:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:19:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:19:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:19:32,490 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:19:32,731 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:19:32,734 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:19:33,030 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:19:33,040 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:19:33,045 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:19:33,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:19:33 BoogieIcfgContainer [2022-11-02 20:19:33,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:19:33,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:19:33,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:19:33,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:19:33,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:19:31" (1/3) ... [2022-11-02 20:19:33,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d321c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:19:33, skipping insertion in model container [2022-11-02 20:19:33,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:32" (2/3) ... [2022-11-02 20:19:33,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d321c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:19:33, skipping insertion in model container [2022-11-02 20:19:33,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:19:33" (3/3) ... [2022-11-02 20:19:33,066 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-variant-2.i [2022-11-02 20:19:33,077 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:19:33,091 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:19:33,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:19:33,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:19:33,242 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:19:33,311 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:19:33,330 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 105 transitions, 220 flow [2022-11-02 20:19:33,341 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 105 transitions, 220 flow [2022-11-02 20:19:33,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 105 transitions, 220 flow [2022-11-02 20:19:33,473 INFO L130 PetriNetUnfolder]: 6/118 cut-off events. [2022-11-02 20:19:33,473 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:19:33,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 118 events. 6/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 156 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-02 20:19:33,485 INFO L118 LiptonReduction]: Number of co-enabled transitions 2296 [2022-11-02 20:19:40,683 INFO L133 LiptonReduction]: Checked pairs total: 1982 [2022-11-02 20:19:40,683 INFO L135 LiptonReduction]: Total number of compositions: 115 [2022-11-02 20:19:40,694 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions, 40 flow [2022-11-02 20:19:40,715 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 61 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:40,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:19:40,780 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;@ae15ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:19:40,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-02 20:19:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 61 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:19:40,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:40,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:19:40,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-02 20:19:40,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:40,814 INFO L85 PathProgramCache]: Analyzing trace with hash -713341894, now seen corresponding path program 1 times [2022-11-02 20:19:40,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:40,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044417764] [2022-11-02 20:19:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:40,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:41,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:41,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044417764] [2022-11-02 20:19:41,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044417764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:41,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:41,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:19:41,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444688615] [2022-11-02 20:19:41,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:41,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:19:41,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:19:41,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:41,319 INFO L87 Difference]: Start difference. First operand has 62 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 61 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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 20:19:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:41,406 INFO L93 Difference]: Finished difference Result 46 states and 88 transitions. [2022-11-02 20:19:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:19:41,410 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 20:19:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:41,422 INFO L225 Difference]: With dead ends: 46 [2022-11-02 20:19:41,422 INFO L226 Difference]: Without dead ends: 46 [2022-11-02 20:19:41,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:41,429 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:41,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:19:41,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-02 20:19:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-02 20:19:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 88 transitions. [2022-11-02 20:19:41,477 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 88 transitions. Word has length 6 [2022-11-02 20:19:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:41,478 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 88 transitions. [2022-11-02 20:19:41,478 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 20:19:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 88 transitions. [2022-11-02 20:19:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:19:41,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:41,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:19:41,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:19:41,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-02 20:19:41,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:41,481 INFO L85 PathProgramCache]: Analyzing trace with hash -713341870, now seen corresponding path program 1 times [2022-11-02 20:19:41,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:41,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661606319] [2022-11-02 20:19:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:41,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:41,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:41,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661606319] [2022-11-02 20:19:41,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661606319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:41,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:41,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:19:41,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455717588] [2022-11-02 20:19:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:41,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:19:41,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:19:41,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:41,645 INFO L87 Difference]: Start difference. First operand 46 states and 88 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:41,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:41,681 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2022-11-02 20:19:41,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:19:41,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 20:19:41,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:41,684 INFO L225 Difference]: With dead ends: 26 [2022-11-02 20:19:41,685 INFO L226 Difference]: Without dead ends: 24 [2022-11-02 20:19:41,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:41,688 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:41,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:19:41,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-02 20:19:41,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-02 20:19:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2022-11-02 20:19:41,700 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 6 [2022-11-02 20:19:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:41,701 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2022-11-02 20:19:41,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2022-11-02 20:19:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:19:41,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:41,706 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:41,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:19:41,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-02 20:19:41,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218748, now seen corresponding path program 1 times [2022-11-02 20:19:41,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:41,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902050402] [2022-11-02 20:19:41,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:41,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:19:41,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:19:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:19:41,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:19:41,847 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:19:41,849 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-02 20:19:41,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-02 20:19:41,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-02 20:19:41,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-02 20:19:41,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-02 20:19:41,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2022-11-02 20:19:41,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-02 20:19:41,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-02 20:19:41,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:19:41,862 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:19:41,869 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:19:41,869 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:19:41,921 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:19:41,928 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:19:41,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 142 transitions, 308 flow [2022-11-02 20:19:41,931 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 142 transitions, 308 flow [2022-11-02 20:19:41,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 142 transitions, 308 flow [2022-11-02 20:19:41,992 INFO L130 PetriNetUnfolder]: 9/166 cut-off events. [2022-11-02 20:19:41,992 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:19:41,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 166 events. 9/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 296 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 175. Up to 6 conditions per place. [2022-11-02 20:19:42,000 INFO L118 LiptonReduction]: Number of co-enabled transitions 5198 [2022-11-02 20:19:49,111 INFO L133 LiptonReduction]: Checked pairs total: 7517 [2022-11-02 20:19:49,112 INFO L135 LiptonReduction]: Total number of compositions: 149 [2022-11-02 20:19:49,113 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 32 transitions, 88 flow [2022-11-02 20:19:49,236 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 988 states, 942 states have (on average 3.417197452229299) internal successors, (3219), 987 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:49,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:19:49,248 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;@ae15ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:19:49,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-02 20:19:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 988 states, 942 states have (on average 3.417197452229299) internal successors, (3219), 987 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:49,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:19:49,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:49,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:49,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 20:19:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash 51481619, now seen corresponding path program 1 times [2022-11-02 20:19:49,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:49,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219855240] [2022-11-02 20:19:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:49,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:49,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:49,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219855240] [2022-11-02 20:19:49,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219855240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:49,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:49,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:19:49,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561066433] [2022-11-02 20:19:49,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:49,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:19:49,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:19:49,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:49,394 INFO L87 Difference]: Start difference. First operand has 988 states, 942 states have (on average 3.417197452229299) internal successors, (3219), 987 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:49,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:49,516 INFO L93 Difference]: Finished difference Result 950 states and 2924 transitions. [2022-11-02 20:19:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:19:49,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:19:49,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:49,534 INFO L225 Difference]: With dead ends: 950 [2022-11-02 20:19:49,534 INFO L226 Difference]: Without dead ends: 908 [2022-11-02 20:19:49,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:49,535 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:49,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 9 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:19:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-11-02 20:19:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 806. [2022-11-02 20:19:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 785 states have (on average 3.1898089171974524) internal successors, (2504), 805 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2504 transitions. [2022-11-02 20:19:49,627 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2504 transitions. Word has length 7 [2022-11-02 20:19:49,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:49,627 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 2504 transitions. [2022-11-02 20:19:49,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:49,628 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2504 transitions. [2022-11-02 20:19:49,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:19:49,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:49,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:49,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:19:49,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 20:19:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1595921856, now seen corresponding path program 1 times [2022-11-02 20:19:49,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:49,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140404198] [2022-11-02 20:19:49,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:49,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:49,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:49,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140404198] [2022-11-02 20:19:49,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140404198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:49,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:49,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:19:49,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233824150] [2022-11-02 20:19:49,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:49,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:19:49,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:49,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:19:49,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:49,706 INFO L87 Difference]: Start difference. First operand 806 states and 2504 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:49,797 INFO L93 Difference]: Finished difference Result 786 states and 2450 transitions. [2022-11-02 20:19:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:19:49,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:19:49,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:49,806 INFO L225 Difference]: With dead ends: 786 [2022-11-02 20:19:49,807 INFO L226 Difference]: Without dead ends: 786 [2022-11-02 20:19:49,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:49,808 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:49,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:19:49,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-11-02 20:19:49,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 786. [2022-11-02 20:19:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 767 states have (on average 3.194263363754889) internal successors, (2450), 785 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 2450 transitions. [2022-11-02 20:19:49,902 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 2450 transitions. Word has length 8 [2022-11-02 20:19:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:49,902 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 2450 transitions. [2022-11-02 20:19:49,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 2450 transitions. [2022-11-02 20:19:49,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:19:49,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:49,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:49,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:19:49,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 20:19:49,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2096299185, now seen corresponding path program 1 times [2022-11-02 20:19:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:49,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39653232] [2022-11-02 20:19:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:49,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:50,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:50,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39653232] [2022-11-02 20:19:50,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39653232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:50,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:50,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:19:50,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946079055] [2022-11-02 20:19:50,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:50,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:19:50,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:50,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:19:50,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:50,019 INFO L87 Difference]: Start difference. First operand 786 states and 2450 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:50,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:50,089 INFO L93 Difference]: Finished difference Result 690 states and 2128 transitions. [2022-11-02 20:19:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:19:50,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2022-11-02 20:19:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:50,097 INFO L225 Difference]: With dead ends: 690 [2022-11-02 20:19:50,099 INFO L226 Difference]: Without dead ends: 690 [2022-11-02 20:19:50,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:50,102 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:50,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:19:50,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-02 20:19:50,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2022-11-02 20:19:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 676 states have (on average 3.1479289940828403) internal successors, (2128), 689 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2128 transitions. [2022-11-02 20:19:50,145 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2128 transitions. Word has length 12 [2022-11-02 20:19:50,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:50,146 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 2128 transitions. [2022-11-02 20:19:50,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:50,148 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2128 transitions. [2022-11-02 20:19:50,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:19:50,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:50,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:50,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:19:50,151 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 20:19:50,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:50,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2096299144, now seen corresponding path program 1 times [2022-11-02 20:19:50,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:50,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067707549] [2022-11-02 20:19:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:50,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:50,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:50,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067707549] [2022-11-02 20:19:50,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067707549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:19:50,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338594343] [2022-11-02 20:19:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:50,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:19:50,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:19:50,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:19:50,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:19:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:50,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:19:50,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:50,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:19:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:50,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338594343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:19:50,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:19:50,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:19:50,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392318857] [2022-11-02 20:19:50,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:19:50,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:19:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:50,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:19:50,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:19:50,596 INFO L87 Difference]: Start difference. First operand 690 states and 2128 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:50,745 INFO L93 Difference]: Finished difference Result 594 states and 1806 transitions. [2022-11-02 20:19:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:19:50,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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 12 [2022-11-02 20:19:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:50,751 INFO L225 Difference]: With dead ends: 594 [2022-11-02 20:19:50,751 INFO L226 Difference]: Without dead ends: 594 [2022-11-02 20:19:50,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:19:50,753 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 48 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:50,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 17 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:19:50,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-11-02 20:19:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2022-11-02 20:19:50,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 585 states have (on average 3.0871794871794873) internal successors, (1806), 593 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1806 transitions. [2022-11-02 20:19:50,779 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1806 transitions. Word has length 12 [2022-11-02 20:19:50,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:50,779 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 1806 transitions. [2022-11-02 20:19:50,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:50,780 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1806 transitions. [2022-11-02 20:19:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:19:50,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:50,782 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:50,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:51,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:19:51,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 20:19:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:51,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1596510175, now seen corresponding path program 1 times [2022-11-02 20:19:51,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:51,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572276573] [2022-11-02 20:19:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:51,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:51,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:51,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572276573] [2022-11-02 20:19:51,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572276573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:51,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:51,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:19:51,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831091723] [2022-11-02 20:19:51,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:51,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:19:51,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:51,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:19:51,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:51,192 INFO L87 Difference]: Start difference. First operand 594 states and 1806 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:51,279 INFO L93 Difference]: Finished difference Result 436 states and 1147 transitions. [2022-11-02 20:19:51,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:19:51,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2022-11-02 20:19:51,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:51,283 INFO L225 Difference]: With dead ends: 436 [2022-11-02 20:19:51,283 INFO L226 Difference]: Without dead ends: 436 [2022-11-02 20:19:51,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:51,286 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:51,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:19:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-11-02 20:19:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2022-11-02 20:19:51,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 427 states have (on average 2.6861826697892273) internal successors, (1147), 435 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1147 transitions. [2022-11-02 20:19:51,306 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1147 transitions. Word has length 14 [2022-11-02 20:19:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:51,307 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 1147 transitions. [2022-11-02 20:19:51,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1147 transitions. [2022-11-02 20:19:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:19:51,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:51,316 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:51,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:19:51,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 20:19:51,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:51,318 INFO L85 PathProgramCache]: Analyzing trace with hash 203875951, now seen corresponding path program 1 times [2022-11-02 20:19:51,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:51,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743685489] [2022-11-02 20:19:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:51,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:19:51,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:19:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:19:51,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:19:51,403 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:19:51,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-02 20:19:51,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-02 20:19:51,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-02 20:19:51,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-02 20:19:51,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-02 20:19:51,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2022-11-02 20:19:51,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-02 20:19:51,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-02 20:19:51,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-02 20:19:51,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-11-02 20:19:51,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:19:51,412 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:19:51,413 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:19:51,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:19:51,461 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:19:51,473 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:19:51,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 179 transitions, 400 flow [2022-11-02 20:19:51,474 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 179 transitions, 400 flow [2022-11-02 20:19:51,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 179 transitions, 400 flow [2022-11-02 20:19:51,567 INFO L130 PetriNetUnfolder]: 12/214 cut-off events. [2022-11-02 20:19:51,567 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:19:51,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 214 events. 12/214 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 428 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 228. Up to 8 conditions per place. [2022-11-02 20:19:51,582 INFO L118 LiptonReduction]: Number of co-enabled transitions 9300 [2022-11-02 20:19:58,988 INFO L133 LiptonReduction]: Checked pairs total: 14532 [2022-11-02 20:19:58,988 INFO L135 LiptonReduction]: Total number of compositions: 192 [2022-11-02 20:19:58,992 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 44 transitions, 130 flow [2022-11-02 20:19:59,533 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9168 states, 9018 states have (on average 4.331448214681748) internal successors, (39061), 9167 states have internal predecessors, (39061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:59,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:19:59,545 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;@ae15ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:19:59,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-02 20:19:59,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 9168 states, 9018 states have (on average 4.331448214681748) internal successors, (39061), 9167 states have internal predecessors, (39061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:59,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:19:59,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:59,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:59,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 20:19:59,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:59,578 INFO L85 PathProgramCache]: Analyzing trace with hash 859921140, now seen corresponding path program 1 times [2022-11-02 20:19:59,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:19:59,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802543521] [2022-11-02 20:19:59,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:59,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:19:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:59,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:19:59,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802543521] [2022-11-02 20:19:59,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802543521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:59,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:59,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:19:59,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866615584] [2022-11-02 20:19:59,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:59,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:19:59,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:19:59,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:19:59,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:19:59,680 INFO L87 Difference]: Start difference. First operand has 9168 states, 9018 states have (on average 4.331448214681748) internal successors, (39061), 9167 states have internal predecessors, (39061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:59,952 INFO L93 Difference]: Finished difference Result 8684 states and 35209 transitions. [2022-11-02 20:19:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:19:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:19:59,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:00,207 INFO L225 Difference]: With dead ends: 8684 [2022-11-02 20:20:00,207 INFO L226 Difference]: Without dead ends: 8398 [2022-11-02 20:20:00,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:00,208 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 22 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:00,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:00,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2022-11-02 20:20:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 7898. [2022-11-02 20:20:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7898 states, 7807 states have (on average 4.14653516075317) internal successors, (32372), 7897 states have internal predecessors, (32372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7898 states to 7898 states and 32372 transitions. [2022-11-02 20:20:00,702 INFO L78 Accepts]: Start accepts. Automaton has 7898 states and 32372 transitions. Word has length 7 [2022-11-02 20:20:00,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:00,703 INFO L495 AbstractCegarLoop]: Abstraction has 7898 states and 32372 transitions. [2022-11-02 20:20:00,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 7898 states and 32372 transitions. [2022-11-02 20:20:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:20:00,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:00,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:00,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:20:00,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 20:20:00,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:00,712 INFO L85 PathProgramCache]: Analyzing trace with hash 887740968, now seen corresponding path program 1 times [2022-11-02 20:20:00,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:00,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083069891] [2022-11-02 20:20:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:00,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:00,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:00,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083069891] [2022-11-02 20:20:00,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083069891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:00,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:00,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:00,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410167825] [2022-11-02 20:20:00,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:00,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:00,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:00,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:00,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:00,761 INFO L87 Difference]: Start difference. First operand 7898 states and 32372 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:01,120 INFO L93 Difference]: Finished difference Result 7874 states and 32300 transitions. [2022-11-02 20:20:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:01,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:20:01,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:01,202 INFO L225 Difference]: With dead ends: 7874 [2022-11-02 20:20:01,203 INFO L226 Difference]: Without dead ends: 7874 [2022-11-02 20:20:01,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:01,205 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:01,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:01,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7874 states. [2022-11-02 20:20:01,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7874 to 7874. [2022-11-02 20:20:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7874 states, 7785 states have (on average 4.149004495825305) internal successors, (32300), 7873 states have internal predecessors, (32300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7874 states to 7874 states and 32300 transitions. [2022-11-02 20:20:02,091 INFO L78 Accepts]: Start accepts. Automaton has 7874 states and 32300 transitions. Word has length 8 [2022-11-02 20:20:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:02,092 INFO L495 AbstractCegarLoop]: Abstraction has 7874 states and 32300 transitions. [2022-11-02 20:20:02,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 7874 states and 32300 transitions. [2022-11-02 20:20:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:20:02,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:02,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:02,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:20:02,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 20:20:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:02,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1668889100, now seen corresponding path program 1 times [2022-11-02 20:20:02,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:02,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81279637] [2022-11-02 20:20:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:02,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:02,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81279637] [2022-11-02 20:20:02,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81279637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:20:02,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031043710] [2022-11-02 20:20:02,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:02,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:02,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:02,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:02,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:20:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:02,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:20:02,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:02,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:02,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031043710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:02,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:20:02,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:20:02,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110646572] [2022-11-02 20:20:02,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:02,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:02,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:02,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:02,347 INFO L87 Difference]: Start difference. First operand 7874 states and 32300 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:02,751 INFO L93 Difference]: Finished difference Result 6866 states and 27986 transitions. [2022-11-02 20:20:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:20:02,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-02 20:20:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:02,810 INFO L225 Difference]: With dead ends: 6866 [2022-11-02 20:20:02,810 INFO L226 Difference]: Without dead ends: 6866 [2022-11-02 20:20:02,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:02,811 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:02,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 13 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:20:02,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6866 states. [2022-11-02 20:20:03,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6866 to 6866. [2022-11-02 20:20:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6866 states, 6801 states have (on average 4.114983090721952) internal successors, (27986), 6865 states have internal predecessors, (27986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6866 states to 6866 states and 27986 transitions. [2022-11-02 20:20:03,477 INFO L78 Accepts]: Start accepts. Automaton has 6866 states and 27986 transitions. Word has length 12 [2022-11-02 20:20:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:03,477 INFO L495 AbstractCegarLoop]: Abstraction has 6866 states and 27986 transitions. [2022-11-02 20:20:03,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:03,478 INFO L276 IsEmpty]: Start isEmpty. Operand 6866 states and 27986 transitions. [2022-11-02 20:20:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:20:03,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:03,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:03,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 20:20:03,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:20:03,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 20:20:03,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:03,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1668889122, now seen corresponding path program 1 times [2022-11-02 20:20:03,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:03,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964084224] [2022-11-02 20:20:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:03,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:03,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:03,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964084224] [2022-11-02 20:20:03,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964084224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:20:03,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322858899] [2022-11-02 20:20:03,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:03,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:03,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:03,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:03,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:20:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:20:03,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:03,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:20:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:03,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322858899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:20:03,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:20:03,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:20:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319273074] [2022-11-02 20:20:03,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:20:03,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:20:03,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:20:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:03,999 INFO L87 Difference]: Start difference. First operand 6866 states and 27986 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:04,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:04,338 INFO L93 Difference]: Finished difference Result 5858 states and 23672 transitions. [2022-11-02 20:20:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:20:04,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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 12 [2022-11-02 20:20:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:04,387 INFO L225 Difference]: With dead ends: 5858 [2022-11-02 20:20:04,387 INFO L226 Difference]: Without dead ends: 5858 [2022-11-02 20:20:04,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:04,388 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 87 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:04,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 21 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:20:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5858 states. [2022-11-02 20:20:04,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5858 to 5858. [2022-11-02 20:20:04,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 5817 states have (on average 4.0694516073577445) internal successors, (23672), 5857 states have internal predecessors, (23672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 23672 transitions. [2022-11-02 20:20:04,781 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 23672 transitions. Word has length 12 [2022-11-02 20:20:04,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:04,782 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 23672 transitions. [2022-11-02 20:20:04,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 23672 transitions. [2022-11-02 20:20:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:20:04,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:04,784 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:04,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:05,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:05,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 20:20:05,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1593118542, now seen corresponding path program 1 times [2022-11-02 20:20:05,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:05,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213919991] [2022-11-02 20:20:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:05,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:05,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:05,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213919991] [2022-11-02 20:20:05,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213919991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:05,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:05,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:05,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531035833] [2022-11-02 20:20:05,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:05,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:05,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:05,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:05,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:05,120 INFO L87 Difference]: Start difference. First operand 5858 states and 23672 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:05,219 INFO L93 Difference]: Finished difference Result 2056 states and 5839 transitions. [2022-11-02 20:20:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:05,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 14 [2022-11-02 20:20:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:05,230 INFO L225 Difference]: With dead ends: 2056 [2022-11-02 20:20:05,231 INFO L226 Difference]: Without dead ends: 2056 [2022-11-02 20:20:05,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:05,232 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:05,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 11 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-11-02 20:20:05,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1936. [2022-11-02 20:20:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1895 states have (on average 2.9145118733509237) internal successors, (5523), 1935 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 5523 transitions. [2022-11-02 20:20:05,298 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 5523 transitions. Word has length 14 [2022-11-02 20:20:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:05,298 INFO L495 AbstractCegarLoop]: Abstraction has 1936 states and 5523 transitions. [2022-11-02 20:20:05,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 5523 transitions. [2022-11-02 20:20:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:20:05,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:05,300 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:05,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:20:05,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 20:20:05,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:05,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2142124038, now seen corresponding path program 1 times [2022-11-02 20:20:05,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:05,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347541332] [2022-11-02 20:20:05,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:05,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:05,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:05,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347541332] [2022-11-02 20:20:05,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347541332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:20:05,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255569436] [2022-11-02 20:20:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:05,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:05,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:05,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:05,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:20:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:05,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:05,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:05,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:05,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255569436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:05,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:20:05,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:20:05,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688541251] [2022-11-02 20:20:05,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:05,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:05,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:05,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:05,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:05,722 INFO L87 Difference]: Start difference. First operand 1936 states and 5523 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:05,975 INFO L93 Difference]: Finished difference Result 2710 states and 7672 transitions. [2022-11-02 20:20:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:05,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2022-11-02 20:20:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:05,989 INFO L225 Difference]: With dead ends: 2710 [2022-11-02 20:20:05,989 INFO L226 Difference]: Without dead ends: 2710 [2022-11-02 20:20:05,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:20:05,990 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 91 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:05,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 32 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:20:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2022-11-02 20:20:06,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 1996. [2022-11-02 20:20:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1960 states have (on average 2.8811224489795917) internal successors, (5647), 1995 states have internal predecessors, (5647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 5647 transitions. [2022-11-02 20:20:06,065 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 5647 transitions. Word has length 15 [2022-11-02 20:20:06,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:06,066 INFO L495 AbstractCegarLoop]: Abstraction has 1996 states and 5647 transitions. [2022-11-02 20:20:06,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:06,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 5647 transitions. [2022-11-02 20:20:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:20:06,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:06,068 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:06,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-02 20:20:06,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:20:06,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 20:20:06,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:06,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1013435997, now seen corresponding path program 1 times [2022-11-02 20:20:06,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:06,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572771931] [2022-11-02 20:20:06,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:06,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:20:06,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:06,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572771931] [2022-11-02 20:20:06,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572771931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:06,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:06,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:06,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236071646] [2022-11-02 20:20:06,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:06,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:06,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:06,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:06,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:06,410 INFO L87 Difference]: Start difference. First operand 1996 states and 5647 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:06,649 INFO L93 Difference]: Finished difference Result 2730 states and 7628 transitions. [2022-11-02 20:20:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:06,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2022-11-02 20:20:06,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:06,662 INFO L225 Difference]: With dead ends: 2730 [2022-11-02 20:20:06,662 INFO L226 Difference]: Without dead ends: 2730 [2022-11-02 20:20:06,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:06,664 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 104 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:06,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 38 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:20:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2022-11-02 20:20:06,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2078. [2022-11-02 20:20:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2047 states have (on average 2.873473375671715) internal successors, (5882), 2077 states have internal predecessors, (5882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 5882 transitions. [2022-11-02 20:20:06,748 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 5882 transitions. Word has length 15 [2022-11-02 20:20:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:06,748 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 5882 transitions. [2022-11-02 20:20:06,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 5882 transitions. [2022-11-02 20:20:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:20:06,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:06,751 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:06,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:20:06,751 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 20:20:06,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:06,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1981334776, now seen corresponding path program 1 times [2022-11-02 20:20:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:06,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198175745] [2022-11-02 20:20:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:06,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:06,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:06,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198175745] [2022-11-02 20:20:06,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198175745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:20:06,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649462509] [2022-11-02 20:20:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:06,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:06,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:06,977 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:06,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:20:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:07,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:07,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:20:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:20:07,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649462509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:20:07,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:20:07,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-11-02 20:20:07,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648974945] [2022-11-02 20:20:07,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:20:07,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:20:07,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:20:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:20:07,255 INFO L87 Difference]: Start difference. First operand 2078 states and 5882 transitions. Second operand has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:07,614 INFO L93 Difference]: Finished difference Result 2772 states and 7767 transitions. [2022-11-02 20:20:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:20:07,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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 16 [2022-11-02 20:20:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:07,630 INFO L225 Difference]: With dead ends: 2772 [2022-11-02 20:20:07,631 INFO L226 Difference]: Without dead ends: 2722 [2022-11-02 20:20:07,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:20:07,634 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 241 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:07,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 49 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:20:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2022-11-02 20:20:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 1864. [2022-11-02 20:20:07,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1838 states have (on average 2.8558215451577804) internal successors, (5249), 1863 states have internal predecessors, (5249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 5249 transitions. [2022-11-02 20:20:07,724 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 5249 transitions. Word has length 16 [2022-11-02 20:20:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:07,725 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 5249 transitions. [2022-11-02 20:20:07,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 5249 transitions. [2022-11-02 20:20:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:20:07,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:07,728 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:07,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:07,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:20:07,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 20:20:07,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:07,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1351745824, now seen corresponding path program 1 times [2022-11-02 20:20:07,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:07,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895516810] [2022-11-02 20:20:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:20:08,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:08,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895516810] [2022-11-02 20:20:08,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895516810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:08,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:08,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:08,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290207981] [2022-11-02 20:20:08,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:08,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:08,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:08,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:08,136 INFO L87 Difference]: Start difference. First operand 1864 states and 5249 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:08,380 INFO L93 Difference]: Finished difference Result 2642 states and 7404 transitions. [2022-11-02 20:20:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:08,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 16 [2022-11-02 20:20:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:08,393 INFO L225 Difference]: With dead ends: 2642 [2022-11-02 20:20:08,393 INFO L226 Difference]: Without dead ends: 2592 [2022-11-02 20:20:08,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:08,394 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 108 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:08,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 30 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:20:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2022-11-02 20:20:08,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 1700. [2022-11-02 20:20:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1679 states have (on average 2.8749255509231686) internal successors, (4827), 1699 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 4827 transitions. [2022-11-02 20:20:08,479 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 4827 transitions. Word has length 16 [2022-11-02 20:20:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:08,479 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 4827 transitions. [2022-11-02 20:20:08,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 4827 transitions. [2022-11-02 20:20:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:20:08,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:08,483 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:08,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:20:08,484 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 20:20:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:08,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1483969710, now seen corresponding path program 1 times [2022-11-02 20:20:08,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:08,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629587162] [2022-11-02 20:20:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:08,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:20:08,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:20:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:20:08,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:20:08,573 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:20:08,574 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-11-02 20:20:08,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-02 20:20:08,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-02 20:20:08,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-02 20:20:08,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-02 20:20:08,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 12 remaining) [2022-11-02 20:20:08,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-11-02 20:20:08,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-11-02 20:20:08,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-02 20:20:08,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-02 20:20:08,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-02 20:20:08,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-02 20:20:08,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:20:08,579 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:08,580 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:20:08,580 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:20:08,634 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:20:08,640 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:20:08,641 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 216 transitions, 496 flow [2022-11-02 20:20:08,641 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 216 transitions, 496 flow [2022-11-02 20:20:08,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 216 transitions, 496 flow [2022-11-02 20:20:08,719 INFO L130 PetriNetUnfolder]: 15/262 cut-off events. [2022-11-02 20:20:08,719 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 20:20:08,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 262 events. 15/262 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 576 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 282. Up to 10 conditions per place. [2022-11-02 20:20:08,738 INFO L118 LiptonReduction]: Number of co-enabled transitions 14602 [2022-11-02 20:20:16,217 INFO L133 LiptonReduction]: Checked pairs total: 23955 [2022-11-02 20:20:16,220 INFO L135 LiptonReduction]: Total number of compositions: 228 [2022-11-02 20:20:16,222 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 54 transitions, 172 flow [2022-11-02 20:20:19,091 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 64392 states, 63945 states have (on average 5.297099069512862) internal successors, (338723), 64391 states have internal predecessors, (338723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:19,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:20:19,095 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;@ae15ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:20:19,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-02 20:20:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 64392 states, 63945 states have (on average 5.297099069512862) internal successors, (338723), 64391 states have internal predecessors, (338723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:20:19,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:19,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:19,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:19,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1050942024, now seen corresponding path program 1 times [2022-11-02 20:20:19,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:19,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353560681] [2022-11-02 20:20:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:19,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:19,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:19,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353560681] [2022-11-02 20:20:19,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353560681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:19,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:19,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:20:19,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322011654] [2022-11-02 20:20:19,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:19,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:19,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:19,805 INFO L87 Difference]: Start difference. First operand has 64392 states, 63945 states have (on average 5.297099069512862) internal successors, (338723), 64391 states have internal predecessors, (338723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:21,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:21,582 INFO L93 Difference]: Finished difference Result 59118 states and 298884 transitions. [2022-11-02 20:20:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:21,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:20:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:22,738 INFO L225 Difference]: With dead ends: 59118 [2022-11-02 20:20:22,738 INFO L226 Difference]: Without dead ends: 58378 [2022-11-02 20:20:22,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:22,739 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:22,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 10 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58378 states. [2022-11-02 20:20:26,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58378 to 57306. [2022-11-02 20:20:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57306 states, 56975 states have (on average 5.093672663448881) internal successors, (290212), 57305 states have internal predecessors, (290212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57306 states to 57306 states and 290212 transitions. [2022-11-02 20:20:27,188 INFO L78 Accepts]: Start accepts. Automaton has 57306 states and 290212 transitions. Word has length 8 [2022-11-02 20:20:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:27,189 INFO L495 AbstractCegarLoop]: Abstraction has 57306 states and 290212 transitions. [2022-11-02 20:20:27,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 57306 states and 290212 transitions. [2022-11-02 20:20:27,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:20:27,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:27,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:27,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:20:27,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:27,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:27,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1050955967, now seen corresponding path program 1 times [2022-11-02 20:20:27,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:27,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659708255] [2022-11-02 20:20:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:27,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:27,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:27,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659708255] [2022-11-02 20:20:27,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659708255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:27,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:27,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:27,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086318124] [2022-11-02 20:20:27,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:27,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:27,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:27,265 INFO L87 Difference]: Start difference. First operand 57306 states and 290212 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:28,822 INFO L93 Difference]: Finished difference Result 57286 states and 290158 transitions. [2022-11-02 20:20:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:28,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:20:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:29,355 INFO L225 Difference]: With dead ends: 57286 [2022-11-02 20:20:29,356 INFO L226 Difference]: Without dead ends: 57286 [2022-11-02 20:20:29,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:29,357 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:29,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57286 states. [2022-11-02 20:20:32,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57286 to 57286. [2022-11-02 20:20:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57286 states, 56957 states have (on average 5.094334322383553) internal successors, (290158), 57285 states have internal predecessors, (290158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57286 states to 57286 states and 290158 transitions. [2022-11-02 20:20:33,177 INFO L78 Accepts]: Start accepts. Automaton has 57286 states and 290158 transitions. Word has length 8 [2022-11-02 20:20:33,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:33,178 INFO L495 AbstractCegarLoop]: Abstraction has 57286 states and 290158 transitions. [2022-11-02 20:20:33,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 57286 states and 290158 transitions. [2022-11-02 20:20:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:20:33,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:33,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:33,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:20:33,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:33,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:33,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1177071572, now seen corresponding path program 1 times [2022-11-02 20:20:33,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:33,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676034815] [2022-11-02 20:20:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:33,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:33,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:33,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676034815] [2022-11-02 20:20:33,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676034815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:20:33,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100022821] [2022-11-02 20:20:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:33,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:33,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:33,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:33,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:20:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:33,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:20:33,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:33,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:20:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:33,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100022821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:20:33,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:20:33,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:20:33,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549113735] [2022-11-02 20:20:33,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:20:33,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:20:33,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:33,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:20:33,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:33,506 INFO L87 Difference]: Start difference. First operand 57286 states and 290158 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:35,348 INFO L93 Difference]: Finished difference Result 49966 states and 252156 transitions. [2022-11-02 20:20:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:35,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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 12 [2022-11-02 20:20:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:35,737 INFO L225 Difference]: With dead ends: 49966 [2022-11-02 20:20:35,737 INFO L226 Difference]: Without dead ends: 49966 [2022-11-02 20:20:35,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:35,738 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 122 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:35,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 48 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:20:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49966 states. [2022-11-02 20:20:37,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49966 to 49966. [2022-11-02 20:20:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49966 states, 49726 states have (on average 5.0709085790129915) internal successors, (252156), 49965 states have internal predecessors, (252156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49966 states to 49966 states and 252156 transitions. [2022-11-02 20:20:38,992 INFO L78 Accepts]: Start accepts. Automaton has 49966 states and 252156 transitions. Word has length 12 [2022-11-02 20:20:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:38,993 INFO L495 AbstractCegarLoop]: Abstraction has 49966 states and 252156 transitions. [2022-11-02 20:20:38,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 49966 states and 252156 transitions. [2022-11-02 20:20:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:20:38,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:38,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:39,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:39,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-02 20:20:39,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:39,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:39,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1177071574, now seen corresponding path program 1 times [2022-11-02 20:20:39,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:39,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333772228] [2022-11-02 20:20:39,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:39,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:39,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:39,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333772228] [2022-11-02 20:20:39,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333772228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:39,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:39,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:39,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187014797] [2022-11-02 20:20:39,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:39,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:39,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:39,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:39,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:39,243 INFO L87 Difference]: Start difference. First operand 49966 states and 252156 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:39,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:39,838 INFO L93 Difference]: Finished difference Result 42646 states and 214154 transitions. [2022-11-02 20:20:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:39,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2022-11-02 20:20:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:41,245 INFO L225 Difference]: With dead ends: 42646 [2022-11-02 20:20:41,245 INFO L226 Difference]: Without dead ends: 42646 [2022-11-02 20:20:41,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:41,246 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:41,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 9 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:41,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42646 states. [2022-11-02 20:20:43,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42646 to 42646. [2022-11-02 20:20:43,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42646 states, 42495 states have (on average 5.039510530650665) internal successors, (214154), 42645 states have internal predecessors, (214154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42646 states to 42646 states and 214154 transitions. [2022-11-02 20:20:43,873 INFO L78 Accepts]: Start accepts. Automaton has 42646 states and 214154 transitions. Word has length 12 [2022-11-02 20:20:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:43,873 INFO L495 AbstractCegarLoop]: Abstraction has 42646 states and 214154 transitions. [2022-11-02 20:20:43,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 42646 states and 214154 transitions. [2022-11-02 20:20:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:20:43,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:43,874 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:20:43,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:43,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1484119454, now seen corresponding path program 1 times [2022-11-02 20:20:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:43,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553835338] [2022-11-02 20:20:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:43,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:44,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:44,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553835338] [2022-11-02 20:20:44,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553835338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:44,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:44,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:44,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130884909] [2022-11-02 20:20:44,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:44,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:44,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:44,008 INFO L87 Difference]: Start difference. First operand 42646 states and 214154 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:44,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:44,144 INFO L93 Difference]: Finished difference Result 6172 states and 18131 transitions. [2022-11-02 20:20:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:44,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2022-11-02 20:20:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:44,169 INFO L225 Difference]: With dead ends: 6172 [2022-11-02 20:20:44,169 INFO L226 Difference]: Without dead ends: 6172 [2022-11-02 20:20:44,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:44,177 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:44,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 14 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:44,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2022-11-02 20:20:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 5802. [2022-11-02 20:20:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5802 states, 5667 states have (on average 3.0287630139403565) internal successors, (17164), 5801 states have internal predecessors, (17164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 17164 transitions. [2022-11-02 20:20:44,341 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 17164 transitions. Word has length 14 [2022-11-02 20:20:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:44,343 INFO L495 AbstractCegarLoop]: Abstraction has 5802 states and 17164 transitions. [2022-11-02 20:20:44,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:44,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 17164 transitions. [2022-11-02 20:20:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:20:44,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:44,345 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:44,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:20:44,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:44,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1250077239, now seen corresponding path program 1 times [2022-11-02 20:20:44,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:44,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809090082] [2022-11-02 20:20:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:44,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:44,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:44,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809090082] [2022-11-02 20:20:44,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809090082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:20:44,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980014512] [2022-11-02 20:20:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:44,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:44,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:44,489 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:44,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:20:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:44,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:44,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:44,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:44,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980014512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:44,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:20:44,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:20:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895319249] [2022-11-02 20:20:44,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:44,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:44,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:44,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:44,695 INFO L87 Difference]: Start difference. First operand 5802 states and 17164 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:45,015 INFO L93 Difference]: Finished difference Result 8398 states and 24632 transitions. [2022-11-02 20:20:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:45,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-11-02 20:20:45,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:45,037 INFO L225 Difference]: With dead ends: 8398 [2022-11-02 20:20:45,037 INFO L226 Difference]: Without dead ends: 8398 [2022-11-02 20:20:45,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:20:45,038 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 115 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:45,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 42 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:20:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2022-11-02 20:20:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 6398. [2022-11-02 20:20:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6398 states, 6272 states have (on average 3.050701530612245) internal successors, (19134), 6397 states have internal predecessors, (19134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6398 states to 6398 states and 19134 transitions. [2022-11-02 20:20:45,186 INFO L78 Accepts]: Start accepts. Automaton has 6398 states and 19134 transitions. Word has length 15 [2022-11-02 20:20:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:45,186 INFO L495 AbstractCegarLoop]: Abstraction has 6398 states and 19134 transitions. [2022-11-02 20:20:45,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 6398 states and 19134 transitions. [2022-11-02 20:20:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:20:45,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:45,187 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:45,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:45,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-02 20:20:45,388 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash -97687304, now seen corresponding path program 1 times [2022-11-02 20:20:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:45,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802964579] [2022-11-02 20:20:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:45,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:45,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802964579] [2022-11-02 20:20:45,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802964579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:20:45,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848515466] [2022-11-02 20:20:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:45,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:45,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:45,490 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:45,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:20:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:45,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:45,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:45,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:20:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:45,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848515466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:20:45,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:20:45,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-11-02 20:20:45,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925021904] [2022-11-02 20:20:45,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:20:45,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:20:45,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:20:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:20:45,797 INFO L87 Difference]: Start difference. First operand 6398 states and 19134 transitions. Second operand has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:46,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:46,387 INFO L93 Difference]: Finished difference Result 8332 states and 24287 transitions. [2022-11-02 20:20:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:20:46,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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 16 [2022-11-02 20:20:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:46,409 INFO L225 Difference]: With dead ends: 8332 [2022-11-02 20:20:46,409 INFO L226 Difference]: Without dead ends: 8222 [2022-11-02 20:20:46,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:20:46,410 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 368 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:46,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 53 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:20:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8222 states. [2022-11-02 20:20:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8222 to 5646. [2022-11-02 20:20:46,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5529 states have (on average 3.023693253752939) internal successors, (16718), 5645 states have internal predecessors, (16718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 16718 transitions. [2022-11-02 20:20:46,545 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 16718 transitions. Word has length 16 [2022-11-02 20:20:46,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:46,545 INFO L495 AbstractCegarLoop]: Abstraction has 5646 states and 16718 transitions. [2022-11-02 20:20:46,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:46,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 16718 transitions. [2022-11-02 20:20:46,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:20:46,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:46,547 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:46,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-02 20:20:46,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b9702a-ae64-46ab-a995-48b8f9c9234f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:46,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:46,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:46,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1557602461, now seen corresponding path program 1 times [2022-11-02 20:20:46,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:46,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30430633] [2022-11-02 20:20:46,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:46,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:20:46,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:46,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30430633] [2022-11-02 20:20:46,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30430633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:46,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:46,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:46,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287651118] [2022-11-02 20:20:46,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:46,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:46,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:46,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:46,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:46,862 INFO L87 Difference]: Start difference. First operand 5646 states and 16718 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:47,173 INFO L93 Difference]: Finished difference Result 9512 states and 28521 transitions. [2022-11-02 20:20:47,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:47,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 16 [2022-11-02 20:20:47,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:47,200 INFO L225 Difference]: With dead ends: 9512 [2022-11-02 20:20:47,200 INFO L226 Difference]: Without dead ends: 9512 [2022-11-02 20:20:47,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:47,201 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 133 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:47,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 32 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:20:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2022-11-02 20:20:47,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 6574. [2022-11-02 20:20:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6574 states, 6466 states have (on average 3.064027219300959) internal successors, (19812), 6573 states have internal predecessors, (19812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6574 states to 6574 states and 19812 transitions. [2022-11-02 20:20:47,360 INFO L78 Accepts]: Start accepts. Automaton has 6574 states and 19812 transitions. Word has length 16 [2022-11-02 20:20:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:47,361 INFO L495 AbstractCegarLoop]: Abstraction has 6574 states and 19812 transitions. [2022-11-02 20:20:47,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 6574 states and 19812 transitions. [2022-11-02 20:20:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:20:47,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:47,363 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:20:47,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1557602475, now seen corresponding path program 1 times [2022-11-02 20:20:47,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:47,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295023879] [2022-11-02 20:20:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:47,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:20:47,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:47,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295023879] [2022-11-02 20:20:47,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295023879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:47,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:47,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:47,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991218428] [2022-11-02 20:20:47,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:47,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:47,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:47,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:47,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:47,482 INFO L87 Difference]: Start difference. First operand 6574 states and 19812 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:47,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:47,805 INFO L93 Difference]: Finished difference Result 9380 states and 27881 transitions. [2022-11-02 20:20:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:47,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 16 [2022-11-02 20:20:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:47,840 INFO L225 Difference]: With dead ends: 9380 [2022-11-02 20:20:47,840 INFO L226 Difference]: Without dead ends: 9264 [2022-11-02 20:20:47,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:47,841 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 154 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:47,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 23 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:20:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9264 states. [2022-11-02 20:20:48,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9264 to 5856. [2022-11-02 20:20:48,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5856 states, 5757 states have (on average 3.0215389960048635) internal successors, (17395), 5855 states have internal predecessors, (17395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5856 states to 5856 states and 17395 transitions. [2022-11-02 20:20:48,044 INFO L78 Accepts]: Start accepts. Automaton has 5856 states and 17395 transitions. Word has length 16 [2022-11-02 20:20:48,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:48,044 INFO L495 AbstractCegarLoop]: Abstraction has 5856 states and 17395 transitions. [2022-11-02 20:20:48,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5856 states and 17395 transitions. [2022-11-02 20:20:48,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:20:48,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:48,047 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:48,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:20:48,048 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:48,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash 574969211, now seen corresponding path program 1 times [2022-11-02 20:20:48,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:48,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830273090] [2022-11-02 20:20:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:48,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:20:48,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:48,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830273090] [2022-11-02 20:20:48,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830273090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:48,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:48,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162481888] [2022-11-02 20:20:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:48,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:48,170 INFO L87 Difference]: Start difference. First operand 5856 states and 17395 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:48,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:48,496 INFO L93 Difference]: Finished difference Result 9050 states and 26826 transitions. [2022-11-02 20:20:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:48,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 20:20:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:48,529 INFO L225 Difference]: With dead ends: 9050 [2022-11-02 20:20:48,529 INFO L226 Difference]: Without dead ends: 9050 [2022-11-02 20:20:48,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:48,531 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 128 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:48,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 42 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:20:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9050 states. [2022-11-02 20:20:48,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9050 to 6742. [2022-11-02 20:20:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6742 states, 6651 states have (on average 3.0401443391971132) internal successors, (20220), 6741 states have internal predecessors, (20220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6742 states to 6742 states and 20220 transitions. [2022-11-02 20:20:48,700 INFO L78 Accepts]: Start accepts. Automaton has 6742 states and 20220 transitions. Word has length 19 [2022-11-02 20:20:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:48,700 INFO L495 AbstractCegarLoop]: Abstraction has 6742 states and 20220 transitions. [2022-11-02 20:20:48,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:48,700 INFO L276 IsEmpty]: Start isEmpty. Operand 6742 states and 20220 transitions. [2022-11-02 20:20:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:20:48,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:48,703 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:48,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:20:48,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:48,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:48,704 INFO L85 PathProgramCache]: Analyzing trace with hash 644177758, now seen corresponding path program 1 times [2022-11-02 20:20:48,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:48,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381906158] [2022-11-02 20:20:48,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:48,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:20:48,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:48,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381906158] [2022-11-02 20:20:48,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381906158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:48,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:48,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:48,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32496824] [2022-11-02 20:20:48,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:48,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:48,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:48,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:48,802 INFO L87 Difference]: Start difference. First operand 6742 states and 20220 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:49,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:49,182 INFO L93 Difference]: Finished difference Result 8994 states and 26506 transitions. [2022-11-02 20:20:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:49,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 20:20:49,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:49,204 INFO L225 Difference]: With dead ends: 8994 [2022-11-02 20:20:49,204 INFO L226 Difference]: Without dead ends: 8880 [2022-11-02 20:20:49,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:49,205 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 131 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:49,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 33 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:20:49,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2022-11-02 20:20:49,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 6196. [2022-11-02 20:20:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6113 states have (on average 3.0134140356617047) internal successors, (18421), 6195 states have internal predecessors, (18421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 18421 transitions. [2022-11-02 20:20:49,350 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 18421 transitions. Word has length 20 [2022-11-02 20:20:49,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:49,351 INFO L495 AbstractCegarLoop]: Abstraction has 6196 states and 18421 transitions. [2022-11-02 20:20:49,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 18421 transitions. [2022-11-02 20:20:49,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:20:49,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:49,355 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:49,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 20:20:49,355 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:20:49,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:49,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1916703106, now seen corresponding path program 1 times [2022-11-02 20:20:49,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:49,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168362251] [2022-11-02 20:20:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:49,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:20:49,379 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:20:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:20:49,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:20:49,401 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:20:49,401 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-11-02 20:20:49,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-02 20:20:49,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-02 20:20:49,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-02 20:20:49,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-02 20:20:49,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2022-11-02 20:20:49,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-11-02 20:20:49,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-11-02 20:20:49,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2022-11-02 20:20:49,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2022-11-02 20:20:49,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-02 20:20:49,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-02 20:20:49,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-02 20:20:49,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-02 20:20:49,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:20:49,405 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:49,406 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:20:49,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-02 20:20:49,446 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:20:49,449 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:20:49,449 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 253 transitions, 596 flow [2022-11-02 20:20:49,450 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 253 transitions, 596 flow [2022-11-02 20:20:49,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 253 transitions, 596 flow [2022-11-02 20:20:49,518 INFO L130 PetriNetUnfolder]: 18/310 cut-off events. [2022-11-02 20:20:49,519 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-02 20:20:49,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 310 events. 18/310 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 722 event pairs, 0 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 337. Up to 12 conditions per place. [2022-11-02 20:20:49,541 INFO L118 LiptonReduction]: Number of co-enabled transitions 21104 [2022-11-02 20:20:57,224 INFO L133 LiptonReduction]: Checked pairs total: 36288 [2022-11-02 20:20:57,224 INFO L135 LiptonReduction]: Total number of compositions: 270 [2022-11-02 20:20:57,225 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 66 transitions, 222 flow