./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-25.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_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/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_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/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_7128162f-edd2-4e06-91ba-515d347c0175/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 778e3ae04d32637f959b85d1a08971a3e61432e093e04b2798423806241a3f5a --- 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 20:39:10,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:39:10,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:39:10,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:39:10,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:39:10,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:39:10,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:39:10,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:39:10,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:39:10,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:39:10,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:39:10,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:39:10,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:39:10,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:39:10,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:39:10,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:39:10,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:39:10,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:39:10,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:39:10,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:39:10,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:39:10,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:39:10,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:39:10,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:39:10,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:39:10,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:39:10,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:39:10,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:39:10,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:39:10,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:39:10,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:39:10,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:39:10,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:39:10,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:39:10,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:39:10,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:39:10,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:39:10,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:39:10,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:39:10,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:39:10,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:39:10,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:39:10,412 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:39:10,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:39:10,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:39:10,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:39:10,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:39:10,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:39:10,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:39:10,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:39:10,417 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:39:10,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:39:10,418 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:39:10,418 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:39:10,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:39:10,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:39:10,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:39:10,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:39:10,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:39:10,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:39:10,420 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:39:10,420 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:39:10,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:39:10,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:39:10,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:39:10,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:39:10,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:39:10,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:39:10,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:10,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:39:10,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:39:10,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:39:10,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:39:10,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:39:10,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:39:10,425 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_7128162f-edd2-4e06-91ba-515d347c0175/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 778e3ae04d32637f959b85d1a08971a3e61432e093e04b2798423806241a3f5a [2022-11-02 20:39:10,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:39:10,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:39:10,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:39:10,792 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:39:10,793 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:39:10,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-deagle/floating_read-25.i [2022-11-02 20:39:10,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/data/c1c2be703/4f6d576511c749b599abc80afd5a62e8/FLAGd20834f72 [2022-11-02 20:39:11,507 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:39:11,508 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/sv-benchmarks/c/pthread-deagle/floating_read-25.i [2022-11-02 20:39:11,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/data/c1c2be703/4f6d576511c749b599abc80afd5a62e8/FLAGd20834f72 [2022-11-02 20:39:11,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/data/c1c2be703/4f6d576511c749b599abc80afd5a62e8 [2022-11-02 20:39:11,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:39:11,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:39:11,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:11,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:39:11,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:39:11,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:11" (1/1) ... [2022-11-02 20:39:11,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ac03cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:11, skipping insertion in model container [2022-11-02 20:39:11,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:11" (1/1) ... [2022-11-02 20:39:11,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:39:11,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:39:12,225 WARN L1543 CHandler]: Possible shadowing of function thread [2022-11-02 20:39:12,241 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_7128162f-edd2-4e06-91ba-515d347c0175/sv-benchmarks/c/pthread-deagle/floating_read-25.i[31197,31210] [2022-11-02 20:39:12,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:12,258 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:39:12,334 WARN L1543 CHandler]: Possible shadowing of function thread [2022-11-02 20:39:12,349 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/sv-benchmarks/c/pthread-deagle/floating_read-25.i[31197,31210] [2022-11-02 20:39:12,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:12,395 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:39:12,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12 WrapperNode [2022-11-02 20:39:12,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:12,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:12,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:39:12,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:39:12,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,473 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-11-02 20:39:12,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:12,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:39:12,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:39:12,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:39:12,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,520 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:39:12,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:39:12,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:39:12,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:39:12,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (1/1) ... [2022-11-02 20:39:12,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:12,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:12,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:39:12,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:39:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:39:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:39:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:39:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:39:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:39:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:39:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:39:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-11-02 20:39:12,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-11-02 20:39:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:39:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:39:12,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:39:12,659 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 20:39:12,808 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:39:12,811 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:39:13,004 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:39:13,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:39:13,026 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:39:13,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:13 BoogieIcfgContainer [2022-11-02 20:39:13,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:39:13,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:39:13,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:39:13,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:39:13,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:39:11" (1/3) ... [2022-11-02 20:39:13,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27489bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:13, skipping insertion in model container [2022-11-02 20:39:13,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:12" (2/3) ... [2022-11-02 20:39:13,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27489bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:13, skipping insertion in model container [2022-11-02 20:39:13,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:13" (3/3) ... [2022-11-02 20:39:13,058 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-25.i [2022-11-02 20:39:13,070 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:39:13,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:39:13,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:39:13,102 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:39:13,217 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:39:13,285 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:39:13,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 66 transitions, 140 flow [2022-11-02 20:39:13,324 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 66 transitions, 140 flow [2022-11-02 20:39:13,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 66 transitions, 140 flow [2022-11-02 20:39:13,398 INFO L130 PetriNetUnfolder]: 7/87 cut-off events. [2022-11-02 20:39:13,399 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:39:13,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 87 events. 7/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 41. Up to 4 conditions per place. [2022-11-02 20:39:13,404 INFO L118 LiptonReduction]: Number of co-enabled transitions 310 [2022-11-02 20:39:15,944 INFO L133 LiptonReduction]: Checked pairs total: 317 [2022-11-02 20:39:15,949 INFO L135 LiptonReduction]: Total number of compositions: 61 [2022-11-02 20:39:15,969 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2022-11-02 20:39:15,997 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 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 20:39:16,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:16,024 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;@b098a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:16,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:39:16,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 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 20:39:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:39:16,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:16,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:39:16,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:16,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:16,049 INFO L85 PathProgramCache]: Analyzing trace with hash 7774890, now seen corresponding path program 1 times [2022-11-02 20:39:16,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:16,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281630451] [2022-11-02 20:39:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:16,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:16,428 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 20:39:16,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:16,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281630451] [2022-11-02 20:39:16,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281630451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:16,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:16,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:39:16,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837466259] [2022-11-02 20:39:16,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:16,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:16,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:16,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:16,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:16,470 INFO L87 Difference]: Start difference. First operand has 26 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 20:39:16,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:16,533 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-11-02 20:39:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:16,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-02 20:39:16,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:16,549 INFO L225 Difference]: With dead ends: 22 [2022-11-02 20:39:16,549 INFO L226 Difference]: Without dead ends: 18 [2022-11-02 20:39:16,551 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 20:39:16,558 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:16,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:16,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-02 20:39:16,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-02 20:39:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-02 20:39:16,601 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 4 [2022-11-02 20:39:16,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:16,602 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-02 20:39:16,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 20:39:16,602 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-02 20:39:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:39:16,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:16,603 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-02 20:39:16,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:39:16,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:16,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1118259562, now seen corresponding path program 1 times [2022-11-02 20:39:16,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:16,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341501940] [2022-11-02 20:39:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:16,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:16,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:16,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:16,731 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:16,733 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:39:16,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:39:16,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:39:16,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:39:16,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:39:16,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:39:16,746 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:39:16,757 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:39:16,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:39:16,777 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:39:16,781 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:39:16,781 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 73 transitions, 164 flow [2022-11-02 20:39:16,782 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 73 transitions, 164 flow [2022-11-02 20:39:16,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 73 transitions, 164 flow [2022-11-02 20:39:16,818 INFO L130 PetriNetUnfolder]: 13/152 cut-off events. [2022-11-02 20:39:16,821 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:39:16,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 152 events. 13/152 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 276 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 89. Up to 8 conditions per place. [2022-11-02 20:39:16,824 INFO L118 LiptonReduction]: Number of co-enabled transitions 860 [2022-11-02 20:39:19,073 INFO L133 LiptonReduction]: Checked pairs total: 1061 [2022-11-02 20:39:19,073 INFO L135 LiptonReduction]: Total number of compositions: 62 [2022-11-02 20:39:19,075 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 20 transitions, 58 flow [2022-11-02 20:39:19,096 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 89 states, 74 states have (on average 2.0135135135135136) internal successors, (149), 88 states have internal predecessors, (149), 0 states have call successors, (0), 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 20:39:19,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:19,104 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;@b098a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:19,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:39:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 74 states have (on average 2.0135135135135136) internal successors, (149), 88 states have internal predecessors, (149), 0 states have call successors, (0), 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 20:39:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:39:19,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:19,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:39:19,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash 376200321, now seen corresponding path program 1 times [2022-11-02 20:39:19,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:19,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410664022] [2022-11-02 20:39:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:19,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:19,263 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 20:39:19,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:19,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410664022] [2022-11-02 20:39:19,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410664022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:19,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:19,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:39:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649868921] [2022-11-02 20:39:19,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:19,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:19,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:19,271 INFO L87 Difference]: Start difference. First operand has 89 states, 74 states have (on average 2.0135135135135136) internal successors, (149), 88 states have internal predecessors, (149), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:19,336 INFO L93 Difference]: Finished difference Result 85 states and 142 transitions. [2022-11-02 20:39:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:19,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:39:19,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:19,346 INFO L225 Difference]: With dead ends: 85 [2022-11-02 20:39:19,346 INFO L226 Difference]: Without dead ends: 75 [2022-11-02 20:39:19,347 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 20:39:19,350 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:19,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-02 20:39:19,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-02 20:39:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.9090909090909092) internal successors, (126), 74 states have internal predecessors, (126), 0 states have call successors, (0), 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 20:39:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 126 transitions. [2022-11-02 20:39:19,379 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 126 transitions. Word has length 5 [2022-11-02 20:39:19,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:19,379 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 126 transitions. [2022-11-02 20:39:19,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 126 transitions. [2022-11-02 20:39:19,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:39:19,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:19,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:39:19,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:39:19,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:19,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:19,386 INFO L85 PathProgramCache]: Analyzing trace with hash 423711427, now seen corresponding path program 1 times [2022-11-02 20:39:19,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:19,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051760472] [2022-11-02 20:39:19,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:19,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:19,500 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 20:39:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:19,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051760472] [2022-11-02 20:39:19,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051760472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:19,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:19,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:19,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348960635] [2022-11-02 20:39:19,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:19,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:19,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:19,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:19,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:19,505 INFO L87 Difference]: Start difference. First operand 75 states and 126 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:19,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:19,542 INFO L93 Difference]: Finished difference Result 71 states and 118 transitions. [2022-11-02 20:39:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:19,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:39:19,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:19,546 INFO L225 Difference]: With dead ends: 71 [2022-11-02 20:39:19,546 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 20:39:19,546 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 20:39:19,547 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:19,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:19,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 20:39:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-02 20:39:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.873015873015873) internal successors, (118), 70 states have internal predecessors, (118), 0 states have call successors, (0), 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 20:39:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 118 transitions. [2022-11-02 20:39:19,557 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 118 transitions. Word has length 9 [2022-11-02 20:39:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:19,558 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 118 transitions. [2022-11-02 20:39:19,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:19,559 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 118 transitions. [2022-11-02 20:39:19,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:39:19,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:19,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:39:19,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:39:19,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash 423711428, now seen corresponding path program 1 times [2022-11-02 20:39:19,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:19,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139283392] [2022-11-02 20:39:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:19,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:19,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139283392] [2022-11-02 20:39:19,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139283392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:19,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:19,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:19,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342912692] [2022-11-02 20:39:19,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:19,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:19,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:19,618 INFO L87 Difference]: Start difference. First operand 71 states and 118 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:19,650 INFO L93 Difference]: Finished difference Result 67 states and 110 transitions. [2022-11-02 20:39:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:19,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:39:19,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:19,652 INFO L225 Difference]: With dead ends: 67 [2022-11-02 20:39:19,652 INFO L226 Difference]: Without dead ends: 67 [2022-11-02 20:39:19,653 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 20:39:19,654 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:19,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:19,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-02 20:39:19,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-02 20:39:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 60 states have (on average 1.8333333333333333) internal successors, (110), 66 states have internal predecessors, (110), 0 states have call successors, (0), 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 20:39:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 110 transitions. [2022-11-02 20:39:19,662 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 110 transitions. Word has length 9 [2022-11-02 20:39:19,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:19,662 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 110 transitions. [2022-11-02 20:39:19,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 110 transitions. [2022-11-02 20:39:19,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:19,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:19,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:19,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:39:19,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:19,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:19,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1473859766, now seen corresponding path program 1 times [2022-11-02 20:39:19,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:19,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854080696] [2022-11-02 20:39:19,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:19,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:19,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:19,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854080696] [2022-11-02 20:39:19,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854080696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:19,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61246848] [2022-11-02 20:39:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:19,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:19,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:19,745 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:19,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:39:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:19,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:39:19,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:19,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:19,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61246848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:19,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:19,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:39:19,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147420785] [2022-11-02 20:39:19,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:20,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:20,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:20,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:20,001 INFO L87 Difference]: Start difference. First operand 67 states and 110 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 20:39:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:20,049 INFO L93 Difference]: Finished difference Result 31 states and 51 transitions. [2022-11-02 20:39:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:20,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:39:20,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:20,051 INFO L225 Difference]: With dead ends: 31 [2022-11-02 20:39:20,051 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 20:39:20,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 20:39:20,052 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:20,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:20,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 20:39:20,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-02 20:39:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.7) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:39:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2022-11-02 20:39:20,057 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 11 [2022-11-02 20:39:20,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:20,057 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2022-11-02 20:39:20,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 20:39:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2022-11-02 20:39:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:20,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:20,059 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-02 20:39:20,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:39:20,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:39:20,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:20,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:20,295 INFO L85 PathProgramCache]: Analyzing trace with hash -835189340, now seen corresponding path program 1 times [2022-11-02 20:39:20,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:20,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319594511] [2022-11-02 20:39:20,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:20,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:20,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:20,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:20,349 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:20,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:39:20,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:39:20,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:39:20,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:39:20,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:39:20,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:39:20,351 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:39:20,351 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:39:20,351 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:39:20,377 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:39:20,380 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:39:20,381 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 80 transitions, 190 flow [2022-11-02 20:39:20,381 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 80 transitions, 190 flow [2022-11-02 20:39:20,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 190 flow [2022-11-02 20:39:20,435 INFO L130 PetriNetUnfolder]: 24/258 cut-off events. [2022-11-02 20:39:20,435 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 20:39:20,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 258 events. 24/258 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 621 event pairs, 1 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 160. Up to 16 conditions per place. [2022-11-02 20:39:20,440 INFO L118 LiptonReduction]: Number of co-enabled transitions 1410 [2022-11-02 20:39:22,852 INFO L133 LiptonReduction]: Checked pairs total: 1668 [2022-11-02 20:39:22,852 INFO L135 LiptonReduction]: Total number of compositions: 67 [2022-11-02 20:39:22,853 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 23 transitions, 76 flow [2022-11-02 20:39:22,878 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 251 states, 222 states have (on average 2.310810810810811) internal successors, (513), 250 states have internal predecessors, (513), 0 states have call successors, (0), 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 20:39:22,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:22,880 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;@b098a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:22,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:39:22,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 222 states have (on average 2.310810810810811) internal successors, (513), 250 states have internal predecessors, (513), 0 states have call successors, (0), 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 20:39:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:39:22,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:22,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:39:22,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash 523483904, now seen corresponding path program 1 times [2022-11-02 20:39:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:22,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12284493] [2022-11-02 20:39:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:22,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:22,931 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 20:39:22,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:22,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12284493] [2022-11-02 20:39:22,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12284493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:22,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:22,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:39:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764457436] [2022-11-02 20:39:22,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:22,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:22,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:22,935 INFO L87 Difference]: Start difference. First operand has 251 states, 222 states have (on average 2.310810810810811) internal successors, (513), 250 states have internal predecessors, (513), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:22,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:22,985 INFO L93 Difference]: Finished difference Result 247 states and 506 transitions. [2022-11-02 20:39:22,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:22,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:39:22,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:22,990 INFO L225 Difference]: With dead ends: 247 [2022-11-02 20:39:22,990 INFO L226 Difference]: Without dead ends: 219 [2022-11-02 20:39:22,991 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 20:39:22,992 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:22,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-02 20:39:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2022-11-02 20:39:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 200 states have (on average 2.255) internal successors, (451), 218 states have internal predecessors, (451), 0 states have call successors, (0), 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 20:39:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 451 transitions. [2022-11-02 20:39:23,011 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 451 transitions. Word has length 5 [2022-11-02 20:39:23,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:23,012 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 451 transitions. [2022-11-02 20:39:23,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 451 transitions. [2022-11-02 20:39:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:39:23,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:23,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:39:23,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:39:23,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:23,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1711023969, now seen corresponding path program 1 times [2022-11-02 20:39:23,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:23,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094025691] [2022-11-02 20:39:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:23,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:23,074 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 20:39:23,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:23,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094025691] [2022-11-02 20:39:23,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094025691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:23,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005898243] [2022-11-02 20:39:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:23,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:23,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:23,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:23,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:39:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:23,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:39:23,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:23,228 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 20:39:23,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:23,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005898243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:23,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:39:23,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-02 20:39:23,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967065046] [2022-11-02 20:39:23,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:23,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:23,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:23,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:23,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:23,231 INFO L87 Difference]: Start difference. First operand 219 states and 451 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:23,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:23,287 INFO L93 Difference]: Finished difference Result 207 states and 423 transitions. [2022-11-02 20:39:23,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:39:23,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:39:23,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:23,290 INFO L225 Difference]: With dead ends: 207 [2022-11-02 20:39:23,290 INFO L226 Difference]: Without dead ends: 207 [2022-11-02 20:39:23,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 20:39:23,291 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:23,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 5 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:23,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-02 20:39:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-11-02 20:39:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 206 states have internal predecessors, (423), 0 states have call successors, (0), 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 20:39:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 423 transitions. [2022-11-02 20:39:23,319 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 423 transitions. Word has length 9 [2022-11-02 20:39:23,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:23,320 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 423 transitions. [2022-11-02 20:39:23,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 423 transitions. [2022-11-02 20:39:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:39:23,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:23,321 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:39:23,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 20:39:23,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:23,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:23,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:23,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1711023989, now seen corresponding path program 1 times [2022-11-02 20:39:23,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:23,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695755777] [2022-11-02 20:39:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:23,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:23,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:23,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695755777] [2022-11-02 20:39:23,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695755777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:23,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:23,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:23,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842914360] [2022-11-02 20:39:23,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:23,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:23,576 INFO L87 Difference]: Start difference. First operand 207 states and 423 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:23,613 INFO L93 Difference]: Finished difference Result 195 states and 395 transitions. [2022-11-02 20:39:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:23,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:39:23,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:23,616 INFO L225 Difference]: With dead ends: 195 [2022-11-02 20:39:23,616 INFO L226 Difference]: Without dead ends: 195 [2022-11-02 20:39:23,616 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 20:39:23,617 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:23,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-02 20:39:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-11-02 20:39:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 180 states have (on average 2.1944444444444446) internal successors, (395), 194 states have internal predecessors, (395), 0 states have call successors, (0), 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 20:39:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 395 transitions. [2022-11-02 20:39:23,629 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 395 transitions. Word has length 9 [2022-11-02 20:39:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:23,630 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 395 transitions. [2022-11-02 20:39:23,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 395 transitions. [2022-11-02 20:39:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:23,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:23,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:23,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:39:23,631 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:23,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash 888657772, now seen corresponding path program 1 times [2022-11-02 20:39:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:23,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760144377] [2022-11-02 20:39:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:23,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:23,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:23,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760144377] [2022-11-02 20:39:23,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760144377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:23,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313767611] [2022-11-02 20:39:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:23,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:23,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:23,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:23,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:39:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:23,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:39:23,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:23,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:23,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313767611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:23,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:23,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:39:23,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623483448] [2022-11-02 20:39:23,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:23,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:23,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:23,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:23,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:23,860 INFO L87 Difference]: Start difference. First operand 195 states and 395 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:23,918 INFO L93 Difference]: Finished difference Result 67 states and 139 transitions. [2022-11-02 20:39:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:39:23,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:39:23,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:23,921 INFO L225 Difference]: With dead ends: 67 [2022-11-02 20:39:23,921 INFO L226 Difference]: Without dead ends: 67 [2022-11-02 20:39:23,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 20:39:23,926 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 23 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:23,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 7 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:23,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-02 20:39:23,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-02 20:39:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.106060606060606) internal successors, (139), 66 states have internal predecessors, (139), 0 states have call successors, (0), 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 20:39:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 139 transitions. [2022-11-02 20:39:23,941 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 139 transitions. Word has length 11 [2022-11-02 20:39:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:23,941 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 139 transitions. [2022-11-02 20:39:23,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 139 transitions. [2022-11-02 20:39:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:39:23,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:23,943 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-02 20:39:23,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:24,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:24,144 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:24,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:24,144 INFO L85 PathProgramCache]: Analyzing trace with hash 922991846, now seen corresponding path program 1 times [2022-11-02 20:39:24,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:24,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691130649] [2022-11-02 20:39:24,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:24,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:24,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:24,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:24,179 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:24,179 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:39:24,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:39:24,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:39:24,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:39:24,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:39:24,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:39:24,181 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:39:24,181 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:39:24,181 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:39:24,210 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:39:24,212 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:39:24,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 87 transitions, 218 flow [2022-11-02 20:39:24,213 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 87 transitions, 218 flow [2022-11-02 20:39:24,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 218 flow [2022-11-02 20:39:24,294 INFO L130 PetriNetUnfolder]: 47/448 cut-off events. [2022-11-02 20:39:24,294 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-02 20:39:24,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 448 events. 47/448 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1461 event pairs, 6 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 278. Up to 32 conditions per place. [2022-11-02 20:39:24,303 INFO L118 LiptonReduction]: Number of co-enabled transitions 2040 [2022-11-02 20:39:26,675 INFO L133 LiptonReduction]: Checked pairs total: 2679 [2022-11-02 20:39:26,675 INFO L135 LiptonReduction]: Total number of compositions: 70 [2022-11-02 20:39:26,676 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 26 transitions, 96 flow [2022-11-02 20:39:26,723 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 701 states, 646 states have (on average 2.626934984520124) internal successors, (1697), 700 states have internal predecessors, (1697), 0 states have call successors, (0), 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 20:39:26,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:26,728 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;@b098a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:26,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:39:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand has 701 states, 646 states have (on average 2.626934984520124) internal successors, (1697), 700 states have internal predecessors, (1697), 0 states have call successors, (0), 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 20:39:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:39:26,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:26,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:39:26,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:26,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:26,732 INFO L85 PathProgramCache]: Analyzing trace with hash 679567708, now seen corresponding path program 1 times [2022-11-02 20:39:26,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:26,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281245274] [2022-11-02 20:39:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:26,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,772 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 20:39:26,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:26,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281245274] [2022-11-02 20:39:26,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281245274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:26,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:26,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:39:26,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627879558] [2022-11-02 20:39:26,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:26,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:26,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:26,782 INFO L87 Difference]: Start difference. First operand has 701 states, 646 states have (on average 2.626934984520124) internal successors, (1697), 700 states have internal predecessors, (1697), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:26,850 INFO L93 Difference]: Finished difference Result 699 states and 1693 transitions. [2022-11-02 20:39:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:26,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:39:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:26,858 INFO L225 Difference]: With dead ends: 699 [2022-11-02 20:39:26,859 INFO L226 Difference]: Without dead ends: 617 [2022-11-02 20:39:26,859 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 20:39:26,860 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:26,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:26,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-02 20:39:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2022-11-02 20:39:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 579 states have (on average 2.5958549222797926) internal successors, (1503), 616 states have internal predecessors, (1503), 0 states have call successors, (0), 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 20:39:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1503 transitions. [2022-11-02 20:39:26,893 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1503 transitions. Word has length 5 [2022-11-02 20:39:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:26,893 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 1503 transitions. [2022-11-02 20:39:26,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1503 transitions. [2022-11-02 20:39:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:39:26,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:26,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:39:26,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:39:26,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash 679567710, now seen corresponding path program 1 times [2022-11-02 20:39:26,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:26,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564758677] [2022-11-02 20:39:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:26,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,931 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 20:39:26,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:26,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564758677] [2022-11-02 20:39:26,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564758677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:26,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:26,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:39:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424860231] [2022-11-02 20:39:26,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:26,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:26,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:26,935 INFO L87 Difference]: Start difference. First operand 617 states and 1503 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:26,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:26,975 INFO L93 Difference]: Finished difference Result 587 states and 1424 transitions. [2022-11-02 20:39:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:26,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:39:26,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:26,980 INFO L225 Difference]: With dead ends: 587 [2022-11-02 20:39:26,980 INFO L226 Difference]: Without dead ends: 587 [2022-11-02 20:39:26,980 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 20:39:26,981 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:26,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-02 20:39:27,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2022-11-02 20:39:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 553 states have (on average 2.5750452079566) internal successors, (1424), 586 states have internal predecessors, (1424), 0 states have call successors, (0), 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 20:39:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1424 transitions. [2022-11-02 20:39:27,006 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1424 transitions. Word has length 5 [2022-11-02 20:39:27,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:27,006 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 1424 transitions. [2022-11-02 20:39:27,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1424 transitions. [2022-11-02 20:39:27,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:39:27,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:27,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:39:27,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:39:27,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:27,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:27,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1589099723, now seen corresponding path program 1 times [2022-11-02 20:39:27,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:27,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699603283] [2022-11-02 20:39:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:27,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:27,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:27,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699603283] [2022-11-02 20:39:27,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699603283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:27,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:27,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:27,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121787926] [2022-11-02 20:39:27,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:27,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:27,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:27,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:27,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:27,065 INFO L87 Difference]: Start difference. First operand 587 states and 1424 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:27,113 INFO L93 Difference]: Finished difference Result 559 states and 1348 transitions. [2022-11-02 20:39:27,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:27,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:39:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:27,118 INFO L225 Difference]: With dead ends: 559 [2022-11-02 20:39:27,118 INFO L226 Difference]: Without dead ends: 559 [2022-11-02 20:39:27,118 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 20:39:27,119 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:27,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-02 20:39:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2022-11-02 20:39:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 528 states have (on average 2.553030303030303) internal successors, (1348), 558 states have internal predecessors, (1348), 0 states have call successors, (0), 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 20:39:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1348 transitions. [2022-11-02 20:39:27,143 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1348 transitions. Word has length 9 [2022-11-02 20:39:27,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:27,143 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 1348 transitions. [2022-11-02 20:39:27,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:27,144 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1348 transitions. [2022-11-02 20:39:27,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:27,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:27,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:27,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:39:27,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:27,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:27,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1720521879, now seen corresponding path program 1 times [2022-11-02 20:39:27,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:27,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079984325] [2022-11-02 20:39:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:27,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:27,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:27,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079984325] [2022-11-02 20:39:27,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079984325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:27,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900455306] [2022-11-02 20:39:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:27,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:27,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:27,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:27,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:39:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:39:27,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:27,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:27,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900455306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:27,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:27,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-02 20:39:27,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961774773] [2022-11-02 20:39:27,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:27,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:27,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:27,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:27,363 INFO L87 Difference]: Start difference. First operand 559 states and 1348 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:27,440 INFO L93 Difference]: Finished difference Result 559 states and 1334 transitions. [2022-11-02 20:39:27,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:39:27,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:39:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:27,445 INFO L225 Difference]: With dead ends: 559 [2022-11-02 20:39:27,445 INFO L226 Difference]: Without dead ends: 559 [2022-11-02 20:39:27,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:27,447 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 37 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:27,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 9 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:27,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-02 20:39:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2022-11-02 20:39:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 528 states have (on average 2.5265151515151514) internal successors, (1334), 558 states have internal predecessors, (1334), 0 states have call successors, (0), 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 20:39:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1334 transitions. [2022-11-02 20:39:27,472 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1334 transitions. Word has length 11 [2022-11-02 20:39:27,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:27,473 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 1334 transitions. [2022-11-02 20:39:27,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:27,473 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1334 transitions. [2022-11-02 20:39:27,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:39:27,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:27,480 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:27,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:27,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:39:27,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:27,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1713436660, now seen corresponding path program 1 times [2022-11-02 20:39:27,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:27,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376399798] [2022-11-02 20:39:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:27,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:27,727 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:27,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:27,745 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:27,745 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:39:27,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:39:27,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:39:27,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:39:27,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:39:27,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:39:27,747 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:39:27,748 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:39:27,748 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-02 20:39:27,768 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-02 20:39:27,770 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:39:27,770 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 94 transitions, 248 flow [2022-11-02 20:39:27,771 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 94 transitions, 248 flow [2022-11-02 20:39:27,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 94 transitions, 248 flow [2022-11-02 20:39:27,905 INFO L130 PetriNetUnfolder]: 98/810 cut-off events. [2022-11-02 20:39:27,905 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-02 20:39:27,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 810 events. 98/810 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3574 event pairs, 23 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 493. Up to 80 conditions per place. [2022-11-02 20:39:27,922 INFO L118 LiptonReduction]: Number of co-enabled transitions 2750 [2022-11-02 20:39:30,344 INFO L133 LiptonReduction]: Checked pairs total: 3518 [2022-11-02 20:39:30,344 INFO L135 LiptonReduction]: Total number of compositions: 75 [2022-11-02 20:39:30,345 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 29 transitions, 118 flow [2022-11-02 20:39:30,446 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1979 states, 1874 states have (on average 2.956776947705443) internal successors, (5541), 1978 states have internal predecessors, (5541), 0 states have call successors, (0), 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 20:39:30,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:30,451 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;@b098a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:30,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:39:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 1979 states, 1874 states have (on average 2.956776947705443) internal successors, (5541), 1978 states have internal predecessors, (5541), 0 states have call successors, (0), 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 20:39:30,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:39:30,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:30,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:39:30,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:30,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:30,459 INFO L85 PathProgramCache]: Analyzing trace with hash 848054550, now seen corresponding path program 1 times [2022-11-02 20:39:30,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:30,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257637967] [2022-11-02 20:39:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:30,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:30,525 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 20:39:30,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:30,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257637967] [2022-11-02 20:39:30,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257637967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:30,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:30,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:39:30,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080222617] [2022-11-02 20:39:30,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:30,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:30,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:30,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:30,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:30,534 INFO L87 Difference]: Start difference. First operand has 1979 states, 1874 states have (on average 2.956776947705443) internal successors, (5541), 1978 states have internal predecessors, (5541), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:30,619 INFO L93 Difference]: Finished difference Result 1975 states and 5534 transitions. [2022-11-02 20:39:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:30,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:39:30,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:30,632 INFO L225 Difference]: With dead ends: 1975 [2022-11-02 20:39:30,633 INFO L226 Difference]: Without dead ends: 1731 [2022-11-02 20:39:30,633 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 20:39:30,634 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:30,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:30,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2022-11-02 20:39:30,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2022-11-02 20:39:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1660 states have (on average 2.9427710843373496) internal successors, (4885), 1730 states have internal predecessors, (4885), 0 states have call successors, (0), 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 20:39:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 4885 transitions. [2022-11-02 20:39:30,707 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 4885 transitions. Word has length 5 [2022-11-02 20:39:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:30,707 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 4885 transitions. [2022-11-02 20:39:30,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 4885 transitions. [2022-11-02 20:39:30,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:39:30,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:30,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:39:30,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:39:30,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:30,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:30,709 INFO L85 PathProgramCache]: Analyzing trace with hash 342296826, now seen corresponding path program 1 times [2022-11-02 20:39:30,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:30,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174490548] [2022-11-02 20:39:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:30,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:30,757 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 20:39:30,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:30,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174490548] [2022-11-02 20:39:30,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174490548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:30,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:30,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:30,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528993339] [2022-11-02 20:39:30,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:30,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:30,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:30,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:30,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:30,761 INFO L87 Difference]: Start difference. First operand 1731 states and 4885 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:30,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:30,815 INFO L93 Difference]: Finished difference Result 1671 states and 4697 transitions. [2022-11-02 20:39:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:39:30,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:30,827 INFO L225 Difference]: With dead ends: 1671 [2022-11-02 20:39:30,827 INFO L226 Difference]: Without dead ends: 1671 [2022-11-02 20:39:30,829 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 20:39:30,831 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:30,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-11-02 20:39:30,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1671. [2022-11-02 20:39:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1604 states have (on average 2.928304239401496) internal successors, (4697), 1670 states have internal predecessors, (4697), 0 states have call successors, (0), 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 20:39:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 4697 transitions. [2022-11-02 20:39:30,900 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 4697 transitions. Word has length 9 [2022-11-02 20:39:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:30,900 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 4697 transitions. [2022-11-02 20:39:30,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 4697 transitions. [2022-11-02 20:39:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:39:30,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:30,902 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:39:30,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:39:30,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:30,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:30,905 INFO L85 PathProgramCache]: Analyzing trace with hash 342296814, now seen corresponding path program 1 times [2022-11-02 20:39:30,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:30,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041668955] [2022-11-02 20:39:30,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:30,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:30,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:30,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041668955] [2022-11-02 20:39:30,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041668955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:30,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:30,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:30,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586789425] [2022-11-02 20:39:30,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:30,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:30,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:30,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:30,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:30,960 INFO L87 Difference]: Start difference. First operand 1671 states and 4697 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:31,019 INFO L93 Difference]: Finished difference Result 1611 states and 4509 transitions. [2022-11-02 20:39:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:31,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:39:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:31,061 INFO L225 Difference]: With dead ends: 1611 [2022-11-02 20:39:31,061 INFO L226 Difference]: Without dead ends: 1611 [2022-11-02 20:39:31,062 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 20:39:31,062 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:31,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-11-02 20:39:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2022-11-02 20:39:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1548 states have (on average 2.9127906976744184) internal successors, (4509), 1610 states have internal predecessors, (4509), 0 states have call successors, (0), 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 20:39:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 4509 transitions. [2022-11-02 20:39:31,146 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 4509 transitions. Word has length 9 [2022-11-02 20:39:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:31,147 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 4509 transitions. [2022-11-02 20:39:31,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 4509 transitions. [2022-11-02 20:39:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:31,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:31,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:31,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:39:31,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:31,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:31,150 INFO L85 PathProgramCache]: Analyzing trace with hash 520472062, now seen corresponding path program 1 times [2022-11-02 20:39:31,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:31,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007389115] [2022-11-02 20:39:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:31,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:31,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:31,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007389115] [2022-11-02 20:39:31,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007389115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:31,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128437238] [2022-11-02 20:39:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:31,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:31,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:31,232 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:31,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:39:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:31,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:39:31,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:31,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:31,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128437238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:31,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:31,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:39:31,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900905885] [2022-11-02 20:39:31,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:31,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:31,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:31,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:31,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:31,386 INFO L87 Difference]: Start difference. First operand 1611 states and 4509 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 20:39:31,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:31,482 INFO L93 Difference]: Finished difference Result 1611 states and 4495 transitions. [2022-11-02 20:39:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:39:31,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:39:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:31,495 INFO L225 Difference]: With dead ends: 1611 [2022-11-02 20:39:31,495 INFO L226 Difference]: Without dead ends: 1611 [2022-11-02 20:39:31,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 20:39:31,496 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 34 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:31,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 9 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-11-02 20:39:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2022-11-02 20:39:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1548 states have (on average 2.90374677002584) internal successors, (4495), 1610 states have internal predecessors, (4495), 0 states have call successors, (0), 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 20:39:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 4495 transitions. [2022-11-02 20:39:31,560 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 4495 transitions. Word has length 11 [2022-11-02 20:39:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:31,561 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 4495 transitions. [2022-11-02 20:39:31,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 20:39:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 4495 transitions. [2022-11-02 20:39:31,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:39:31,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:31,563 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:31,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:31,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 20:39:31,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:31,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1562680047, now seen corresponding path program 1 times [2022-11-02 20:39:31,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:31,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191623222] [2022-11-02 20:39:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:31,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:39:31,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:31,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191623222] [2022-11-02 20:39:31,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191623222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:31,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:31,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:31,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13582324] [2022-11-02 20:39:31,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:31,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:31,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:31,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:31,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:31,866 INFO L87 Difference]: Start difference. First operand 1611 states and 4495 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 20:39:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:31,934 INFO L93 Difference]: Finished difference Result 1547 states and 4287 transitions. [2022-11-02 20:39:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:31,935 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 23 [2022-11-02 20:39:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:31,947 INFO L225 Difference]: With dead ends: 1547 [2022-11-02 20:39:31,947 INFO L226 Difference]: Without dead ends: 1547 [2022-11-02 20:39:31,948 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 20:39:31,949 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:31,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-02 20:39:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1547. [2022-11-02 20:39:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1494 states have (on average 2.8694779116465865) internal successors, (4287), 1546 states have internal predecessors, (4287), 0 states have call successors, (0), 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 20:39:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 4287 transitions. [2022-11-02 20:39:32,075 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 4287 transitions. Word has length 23 [2022-11-02 20:39:32,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:32,076 INFO L495 AbstractCegarLoop]: Abstraction has 1547 states and 4287 transitions. [2022-11-02 20:39:32,076 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 20:39:32,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 4287 transitions. [2022-11-02 20:39:32,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:39:32,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:32,079 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:32,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:39:32,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:32,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1777468794, now seen corresponding path program 1 times [2022-11-02 20:39:32,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:32,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394349987] [2022-11-02 20:39:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:32,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:32,114 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:32,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:32,148 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:32,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:39:32,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:39:32,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:39:32,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:39:32,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:39:32,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:39:32,151 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:39:32,151 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:39:32,152 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-02 20:39:32,182 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-02 20:39:32,185 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:39:32,185 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 101 transitions, 280 flow [2022-11-02 20:39:32,186 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 101 transitions, 280 flow [2022-11-02 20:39:32,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 101 transitions, 280 flow [2022-11-02 20:39:32,497 INFO L130 PetriNetUnfolder]: 213/1524 cut-off events. [2022-11-02 20:39:32,497 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-11-02 20:39:32,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1756 conditions, 1524 events. 213/1524 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8686 event pairs, 72 based on Foata normal form. 0/1237 useless extension candidates. Maximal degree in co-relation 910. Up to 192 conditions per place. [2022-11-02 20:39:32,534 INFO L118 LiptonReduction]: Number of co-enabled transitions 3540 [2022-11-02 20:39:35,118 INFO L133 LiptonReduction]: Checked pairs total: 5675 [2022-11-02 20:39:35,119 INFO L135 LiptonReduction]: Total number of compositions: 78 [2022-11-02 20:39:35,119 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 32 transitions, 142 flow [2022-11-02 20:39:35,376 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5669 states, 5466 states have (on average 3.296194657885108) internal successors, (18017), 5668 states have internal predecessors, (18017), 0 states have call successors, (0), 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 20:39:35,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:35,378 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;@b098a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:35,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:39:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 5669 states, 5466 states have (on average 3.296194657885108) internal successors, (18017), 5668 states have internal predecessors, (18017), 0 states have call successors, (0), 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 20:39:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:39:35,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:35,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:39:35,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:35,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1025401184, now seen corresponding path program 1 times [2022-11-02 20:39:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:35,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985851456] [2022-11-02 20:39:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:35,423 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 20:39:35,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:35,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985851456] [2022-11-02 20:39:35,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985851456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:35,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:35,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:39:35,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550543130] [2022-11-02 20:39:35,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:35,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:35,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:35,442 INFO L87 Difference]: Start difference. First operand has 5669 states, 5466 states have (on average 3.296194657885108) internal successors, (18017), 5668 states have internal predecessors, (18017), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:35,565 INFO L93 Difference]: Finished difference Result 5665 states and 18010 transitions. [2022-11-02 20:39:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:35,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:39:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:35,630 INFO L225 Difference]: With dead ends: 5665 [2022-11-02 20:39:35,631 INFO L226 Difference]: Without dead ends: 4935 [2022-11-02 20:39:35,631 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 20:39:35,632 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:35,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2022-11-02 20:39:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4935. [2022-11-02 20:39:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4935 states, 4798 states have (on average 3.2976240100041685) internal successors, (15822), 4934 states have internal predecessors, (15822), 0 states have call successors, (0), 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 20:39:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4935 states to 4935 states and 15822 transitions. [2022-11-02 20:39:35,930 INFO L78 Accepts]: Start accepts. Automaton has 4935 states and 15822 transitions. Word has length 5 [2022-11-02 20:39:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:35,931 INFO L495 AbstractCegarLoop]: Abstraction has 4935 states and 15822 transitions. [2022-11-02 20:39:35,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4935 states and 15822 transitions. [2022-11-02 20:39:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:39:35,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:35,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:39:35,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:39:35,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:35,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:35,933 INFO L85 PathProgramCache]: Analyzing trace with hash -583136544, now seen corresponding path program 1 times [2022-11-02 20:39:35,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:35,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949441871] [2022-11-02 20:39:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:35,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:35,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:35,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949441871] [2022-11-02 20:39:35,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949441871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:35,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:35,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213830967] [2022-11-02 20:39:35,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:35,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:35,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:35,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:35,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:35,968 INFO L87 Difference]: Start difference. First operand 4935 states and 15822 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:36,083 INFO L93 Difference]: Finished difference Result 4811 states and 15378 transitions. [2022-11-02 20:39:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:36,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:39:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:36,113 INFO L225 Difference]: With dead ends: 4811 [2022-11-02 20:39:36,113 INFO L226 Difference]: Without dead ends: 4811 [2022-11-02 20:39:36,114 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 20:39:36,114 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:36,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:36,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2022-11-02 20:39:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 4811. [2022-11-02 20:39:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4811 states, 4679 states have (on average 3.2865997007907675) internal successors, (15378), 4810 states have internal predecessors, (15378), 0 states have call successors, (0), 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 20:39:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 15378 transitions. [2022-11-02 20:39:36,453 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 15378 transitions. Word has length 9 [2022-11-02 20:39:36,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:36,453 INFO L495 AbstractCegarLoop]: Abstraction has 4811 states and 15378 transitions. [2022-11-02 20:39:36,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:36,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 15378 transitions. [2022-11-02 20:39:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:39:36,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:36,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:39:36,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:39:36,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash -583136524, now seen corresponding path program 1 times [2022-11-02 20:39:36,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:36,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333949899] [2022-11-02 20:39:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:36,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:36,500 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 20:39:36,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:36,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333949899] [2022-11-02 20:39:36,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333949899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:36,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:36,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:36,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917848985] [2022-11-02 20:39:36,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:36,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:36,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:36,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:36,503 INFO L87 Difference]: Start difference. First operand 4811 states and 15378 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:36,575 INFO L93 Difference]: Finished difference Result 4687 states and 14934 transitions. [2022-11-02 20:39:36,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:39:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:36,600 INFO L225 Difference]: With dead ends: 4687 [2022-11-02 20:39:36,600 INFO L226 Difference]: Without dead ends: 4687 [2022-11-02 20:39:36,602 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 20:39:36,603 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:36,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2022-11-02 20:39:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4687. [2022-11-02 20:39:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4687 states, 4560 states have (on average 3.275) internal successors, (14934), 4686 states have internal predecessors, (14934), 0 states have call successors, (0), 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 20:39:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 14934 transitions. [2022-11-02 20:39:36,878 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 14934 transitions. Word has length 9 [2022-11-02 20:39:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:36,879 INFO L495 AbstractCegarLoop]: Abstraction has 4687 states and 14934 transitions. [2022-11-02 20:39:36,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 14934 transitions. [2022-11-02 20:39:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:36,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:36,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:36,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:39:36,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:36,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:36,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1748699529, now seen corresponding path program 1 times [2022-11-02 20:39:36,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:36,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533982451] [2022-11-02 20:39:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:36,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:36,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:36,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533982451] [2022-11-02 20:39:36,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533982451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:36,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346577852] [2022-11-02 20:39:36,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:36,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:36,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:36,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:36,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:39:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:37,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:39:37,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:37,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:37,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346577852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:37,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:37,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:39:37,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087463544] [2022-11-02 20:39:37,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:37,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:37,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:37,111 INFO L87 Difference]: Start difference. First operand 4687 states and 14934 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:37,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:37,370 INFO L93 Difference]: Finished difference Result 4687 states and 14920 transitions. [2022-11-02 20:39:37,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:39:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:39:37,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:37,443 INFO L225 Difference]: With dead ends: 4687 [2022-11-02 20:39:37,443 INFO L226 Difference]: Without dead ends: 4687 [2022-11-02 20:39:37,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 20:39:37,445 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:37,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 12 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2022-11-02 20:39:37,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4687. [2022-11-02 20:39:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4687 states, 4560 states have (on average 3.2719298245614037) internal successors, (14920), 4686 states have internal predecessors, (14920), 0 states have call successors, (0), 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 20:39:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 14920 transitions. [2022-11-02 20:39:37,748 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 14920 transitions. Word has length 11 [2022-11-02 20:39:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:37,748 INFO L495 AbstractCegarLoop]: Abstraction has 4687 states and 14920 transitions. [2022-11-02 20:39:37,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 14920 transitions. [2022-11-02 20:39:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:39:37,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:37,751 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:37,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:37,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-02 20:39:37,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash -71695606, now seen corresponding path program 1 times [2022-11-02 20:39:37,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:37,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852436380] [2022-11-02 20:39:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:37,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:39:38,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:38,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852436380] [2022-11-02 20:39:38,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852436380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:38,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:38,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095410364] [2022-11-02 20:39:38,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:38,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:38,075 INFO L87 Difference]: Start difference. First operand 4687 states and 14920 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 20:39:38,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:38,196 INFO L93 Difference]: Finished difference Result 4623 states and 14600 transitions. [2022-11-02 20:39:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:38,197 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 23 [2022-11-02 20:39:38,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:38,226 INFO L225 Difference]: With dead ends: 4623 [2022-11-02 20:39:38,226 INFO L226 Difference]: Without dead ends: 4623 [2022-11-02 20:39:38,228 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 20:39:38,233 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:38,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 6 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2022-11-02 20:39:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 4623. [2022-11-02 20:39:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4623 states, 4508 states have (on average 3.23868677905945) internal successors, (14600), 4622 states have internal predecessors, (14600), 0 states have call successors, (0), 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 20:39:38,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 14600 transitions. [2022-11-02 20:39:38,552 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 14600 transitions. Word has length 23 [2022-11-02 20:39:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:38,555 INFO L495 AbstractCegarLoop]: Abstraction has 4623 states and 14600 transitions. [2022-11-02 20:39:38,555 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 20:39:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 14600 transitions. [2022-11-02 20:39:38,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:39:38,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:38,612 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:38,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:39:38,613 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:38,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:38,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1782765296, now seen corresponding path program 1 times [2022-11-02 20:39:38,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:38,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055678963] [2022-11-02 20:39:38,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:38,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:38,656 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:38,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:38,678 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:38,678 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:39:38,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:39:38,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:39:38,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:39:38,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:39:38,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:39:38,680 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:39:38,682 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:39:38,683 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-11-02 20:39:38,718 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-11-02 20:39:38,721 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:39:38,721 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 108 transitions, 314 flow [2022-11-02 20:39:38,722 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 108 transitions, 314 flow [2022-11-02 20:39:38,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 314 flow [2022-11-02 20:39:39,374 INFO L130 PetriNetUnfolder]: 472/2958 cut-off events. [2022-11-02 20:39:39,375 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2022-11-02 20:39:39,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3456 conditions, 2958 events. 472/2958 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 20933 event pairs, 201 based on Foata normal form. 0/2410 useless extension candidates. Maximal degree in co-relation 1745. Up to 448 conditions per place. [2022-11-02 20:39:39,422 INFO L118 LiptonReduction]: Number of co-enabled transitions 4410 [2022-11-02 20:39:42,209 INFO L133 LiptonReduction]: Checked pairs total: 7018 [2022-11-02 20:39:42,209 INFO L135 LiptonReduction]: Total number of compositions: 83 [2022-11-02 20:39:42,210 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 35 transitions, 168 flow [2022-11-02 20:39:42,989 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 16451 states, 16054 states have (on average 3.6430173165566213) internal successors, (58485), 16450 states have internal predecessors, (58485), 0 states have call successors, (0), 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 20:39:42,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:42,991 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;@b098a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:42,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:39:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 16451 states, 16054 states have (on average 3.6430173165566213) internal successors, (58485), 16450 states have internal predecessors, (58485), 0 states have call successors, (0), 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 20:39:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:39:43,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:43,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:39:43,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:43,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1214286898, now seen corresponding path program 1 times [2022-11-02 20:39:43,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:43,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011202713] [2022-11-02 20:39:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:43,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:43,071 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 20:39:43,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:43,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011202713] [2022-11-02 20:39:43,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011202713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:43,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:43,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:39:43,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186429094] [2022-11-02 20:39:43,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:43,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:43,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:43,121 INFO L87 Difference]: Start difference. First operand has 16451 states, 16054 states have (on average 3.6430173165566213) internal successors, (58485), 16450 states have internal predecessors, (58485), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:43,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:43,446 INFO L93 Difference]: Finished difference Result 16449 states and 58481 transitions. [2022-11-02 20:39:43,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:43,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:39:43,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:43,575 INFO L225 Difference]: With dead ends: 16449 [2022-11-02 20:39:43,575 INFO L226 Difference]: Without dead ends: 14261 [2022-11-02 20:39:43,576 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 20:39:43,577 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:43,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:43,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14261 states. [2022-11-02 20:39:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 14261. [2022-11-02 20:39:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14261 states, 13993 states have (on average 3.658257700278711) internal successors, (51190), 14260 states have internal predecessors, (51190), 0 states have call successors, (0), 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 20:39:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14261 states to 14261 states and 51190 transitions. [2022-11-02 20:39:44,271 INFO L78 Accepts]: Start accepts. Automaton has 14261 states and 51190 transitions. Word has length 5 [2022-11-02 20:39:44,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:44,271 INFO L495 AbstractCegarLoop]: Abstraction has 14261 states and 51190 transitions. [2022-11-02 20:39:44,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 14261 states and 51190 transitions. [2022-11-02 20:39:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:39:44,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:44,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:39:44,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 20:39:44,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:44,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1214286916, now seen corresponding path program 1 times [2022-11-02 20:39:44,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:44,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295735414] [2022-11-02 20:39:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:44,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,299 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 20:39:44,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:44,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295735414] [2022-11-02 20:39:44,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295735414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:44,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:44,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:39:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184415660] [2022-11-02 20:39:44,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:44,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:44,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:44,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:44,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:44,302 INFO L87 Difference]: Start difference. First operand 14261 states and 51190 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:44,825 INFO L93 Difference]: Finished difference Result 14007 states and 50167 transitions. [2022-11-02 20:39:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:44,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:39:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:44,928 INFO L225 Difference]: With dead ends: 14007 [2022-11-02 20:39:44,928 INFO L226 Difference]: Without dead ends: 14007 [2022-11-02 20:39:44,929 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 20:39:44,929 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:44,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:45,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14007 states. [2022-11-02 20:39:45,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14007 to 14007. [2022-11-02 20:39:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14007 states, 13746 states have (on average 3.649570784228139) internal successors, (50167), 14006 states have internal predecessors, (50167), 0 states have call successors, (0), 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 20:39:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14007 states to 14007 states and 50167 transitions. [2022-11-02 20:39:45,707 INFO L78 Accepts]: Start accepts. Automaton has 14007 states and 50167 transitions. Word has length 5 [2022-11-02 20:39:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:45,707 INFO L495 AbstractCegarLoop]: Abstraction has 14007 states and 50167 transitions. [2022-11-02 20:39:45,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 14007 states and 50167 transitions. [2022-11-02 20:39:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:39:45,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:45,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:39:45,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:39:45,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash -750356034, now seen corresponding path program 1 times [2022-11-02 20:39:45,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:45,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002017897] [2022-11-02 20:39:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:45,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:45,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:45,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002017897] [2022-11-02 20:39:45,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002017897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:45,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:45,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:45,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240879536] [2022-11-02 20:39:45,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:45,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:45,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:45,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:45,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:45,901 INFO L87 Difference]: Start difference. First operand 14007 states and 50167 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:46,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:46,148 INFO L93 Difference]: Finished difference Result 13755 states and 49147 transitions. [2022-11-02 20:39:46,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:46,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:39:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:46,254 INFO L225 Difference]: With dead ends: 13755 [2022-11-02 20:39:46,254 INFO L226 Difference]: Without dead ends: 13755 [2022-11-02 20:39:46,254 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 20:39:46,255 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:46,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13755 states. [2022-11-02 20:39:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13755 to 13755. [2022-11-02 20:39:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13755 states, 13500 states have (on average 3.6405185185185185) internal successors, (49147), 13754 states have internal predecessors, (49147), 0 states have call successors, (0), 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 20:39:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13755 states to 13755 states and 49147 transitions. [2022-11-02 20:39:47,170 INFO L78 Accepts]: Start accepts. Automaton has 13755 states and 49147 transitions. Word has length 9 [2022-11-02 20:39:47,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:47,170 INFO L495 AbstractCegarLoop]: Abstraction has 13755 states and 49147 transitions. [2022-11-02 20:39:47,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 13755 states and 49147 transitions. [2022-11-02 20:39:47,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:47,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:47,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:47,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 20:39:47,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:47,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:47,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1490945756, now seen corresponding path program 1 times [2022-11-02 20:39:47,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:47,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461942881] [2022-11-02 20:39:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:47,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:47,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:47,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461942881] [2022-11-02 20:39:47,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461942881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:47,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384570049] [2022-11-02 20:39:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:47,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:47,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:47,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:47,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:39:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:47,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:39:47,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:47,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:47,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384570049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:47,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:47,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-02 20:39:47,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5262914] [2022-11-02 20:39:47,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:47,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:47,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:47,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:47,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:47,415 INFO L87 Difference]: Start difference. First operand 13755 states and 49147 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:47,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:47,621 INFO L93 Difference]: Finished difference Result 13755 states and 49133 transitions. [2022-11-02 20:39:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:39:47,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:39:47,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:47,828 INFO L225 Difference]: With dead ends: 13755 [2022-11-02 20:39:47,829 INFO L226 Difference]: Without dead ends: 13755 [2022-11-02 20:39:47,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:47,830 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:47,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 9 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13755 states. [2022-11-02 20:39:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13755 to 13755. [2022-11-02 20:39:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13755 states, 13500 states have (on average 3.6394814814814813) internal successors, (49133), 13754 states have internal predecessors, (49133), 0 states have call successors, (0), 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 20:39:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13755 states to 13755 states and 49133 transitions. [2022-11-02 20:39:48,658 INFO L78 Accepts]: Start accepts. Automaton has 13755 states and 49133 transitions. Word has length 11 [2022-11-02 20:39:48,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:48,659 INFO L495 AbstractCegarLoop]: Abstraction has 13755 states and 49133 transitions. [2022-11-02 20:39:48,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:48,659 INFO L276 IsEmpty]: Start isEmpty. Operand 13755 states and 49133 transitions. [2022-11-02 20:39:48,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:39:48,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:48,660 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:48,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-02 20:39:48,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-02 20:39:48,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:48,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1897468259, now seen corresponding path program 1 times [2022-11-02 20:39:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:48,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272173477] [2022-11-02 20:39:48,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:48,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:39:48,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:48,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272173477] [2022-11-02 20:39:48,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272173477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:48,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:48,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:48,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955591783] [2022-11-02 20:39:48,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:48,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:48,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:48,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:48,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:48,929 INFO L87 Difference]: Start difference. First operand 13755 states and 49133 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 20:39:49,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:49,131 INFO L93 Difference]: Finished difference Result 13691 states and 48557 transitions. [2022-11-02 20:39:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:49,131 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 23 [2022-11-02 20:39:49,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:49,203 INFO L225 Difference]: With dead ends: 13691 [2022-11-02 20:39:49,203 INFO L226 Difference]: Without dead ends: 13691 [2022-11-02 20:39:49,204 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 20:39:49,204 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:49,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:49,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13691 states. [2022-11-02 20:39:49,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13691 to 13691. [2022-11-02 20:39:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13691 states, 13450 states have (on average 3.610185873605948) internal successors, (48557), 13690 states have internal predecessors, (48557), 0 states have call successors, (0), 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 20:39:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13691 states to 13691 states and 48557 transitions. [2022-11-02 20:39:49,927 INFO L78 Accepts]: Start accepts. Automaton has 13691 states and 48557 transitions. Word has length 23 [2022-11-02 20:39:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:49,927 INFO L495 AbstractCegarLoop]: Abstraction has 13691 states and 48557 transitions. [2022-11-02 20:39:49,927 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 20:39:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 13691 states and 48557 transitions. [2022-11-02 20:39:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:39:49,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:49,934 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:49,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 20:39:49,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:49,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash -54045946, now seen corresponding path program 1 times [2022-11-02 20:39:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:49,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075309747] [2022-11-02 20:39:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:49,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:39:50,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:50,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075309747] [2022-11-02 20:39:50,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075309747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:50,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155616471] [2022-11-02 20:39:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:50,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:50,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:50,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:50,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:39:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:50,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:39:50,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:39:50,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:39:50,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155616471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:50,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:50,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-02 20:39:50,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020183358] [2022-11-02 20:39:50,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:50,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:39:50,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:50,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:39:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:39:50,376 INFO L87 Difference]: Start difference. First operand 13691 states and 48557 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 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 20:39:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:50,499 INFO L93 Difference]: Finished difference Result 1147 states and 4543 transitions. [2022-11-02 20:39:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:39:50,500 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2022-11-02 20:39:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:50,506 INFO L225 Difference]: With dead ends: 1147 [2022-11-02 20:39:50,506 INFO L226 Difference]: Without dead ends: 1147 [2022-11-02 20:39:50,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:39:50,508 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 82 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:50,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 10 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-11-02 20:39:50,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2022-11-02 20:39:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 3.9642233856893543) internal successors, (4543), 1146 states have internal predecessors, (4543), 0 states have call successors, (0), 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 20:39:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 4543 transitions. [2022-11-02 20:39:50,738 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 4543 transitions. Word has length 28 [2022-11-02 20:39:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:50,740 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 4543 transitions. [2022-11-02 20:39:50,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 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 20:39:50,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 4543 transitions. [2022-11-02 20:39:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:39:50,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:50,744 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:50,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:50,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-02 20:39:50,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -948747254, now seen corresponding path program 1 times [2022-11-02 20:39:50,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:50,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406313305] [2022-11-02 20:39:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:50,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:51,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:51,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:51,026 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:51,027 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:39:51,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:39:51,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:39:51,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:39:51,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:39:51,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-02 20:39:51,029 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:51,029 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:39:51,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-11-02 20:39:51,059 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-02 20:39:51,061 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:39:51,061 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 115 transitions, 350 flow [2022-11-02 20:39:51,062 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 115 transitions, 350 flow [2022-11-02 20:39:51,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 115 transitions, 350 flow [2022-11-02 20:39:52,431 INFO L130 PetriNetUnfolder]: 1051/5864 cut-off events. [2022-11-02 20:39:52,431 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2022-11-02 20:39:52,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6949 conditions, 5864 events. 1051/5864 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 50156 event pairs, 522 based on Foata normal form. 0/4799 useless extension candidates. Maximal degree in co-relation 3445. Up to 1024 conditions per place. [2022-11-02 20:39:52,583 INFO L118 LiptonReduction]: Number of co-enabled transitions 5360 [2022-11-02 20:39:55,397 INFO L133 LiptonReduction]: Checked pairs total: 8646 [2022-11-02 20:39:55,397 INFO L135 LiptonReduction]: Total number of compositions: 86 [2022-11-02 20:39:55,398 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 38 transitions, 196 flow [2022-11-02 20:39:57,113 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 48221 states, 47438 states have (on average 3.996142333150639) internal successors, (189569), 48220 states have internal predecessors, (189569), 0 states have call successors, (0), 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 20:39:57,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:57,115 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;@b098a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:57,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:39:57,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 48221 states, 47438 states have (on average 3.996142333150639) internal successors, (189569), 48220 states have internal predecessors, (189569), 0 states have call successors, (0), 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 20:39:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:39:57,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:57,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:39:57,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:39:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1412628276, now seen corresponding path program 1 times [2022-11-02 20:39:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201895797] [2022-11-02 20:39:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:57,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:57,204 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 20:39:57,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:57,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201895797] [2022-11-02 20:39:57,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201895797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:57,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:57,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:39:57,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93300866] [2022-11-02 20:39:57,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:57,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:57,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:57,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:57,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:57,278 INFO L87 Difference]: Start difference. First operand has 48221 states, 47438 states have (on average 3.996142333150639) internal successors, (189569), 48220 states have internal predecessors, (189569), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:39:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:58,100 INFO L93 Difference]: Finished difference Result 48217 states and 189562 transitions. [2022-11-02 20:39:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:58,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:39:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:58,335 INFO L225 Difference]: With dead ends: 48217 [2022-11-02 20:39:58,335 INFO L226 Difference]: Without dead ends: 41655 [2022-11-02 20:39:58,336 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 20:39:58,336 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:58,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:58,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41655 states. [2022-11-02 20:40:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41655 to 41655. [2022-11-02 20:40:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41655 states, 41130 states have (on average 4.023924142961342) internal successors, (165504), 41654 states have internal predecessors, (165504), 0 states have call successors, (0), 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 20:40:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41655 states to 41655 states and 165504 transitions. [2022-11-02 20:40:01,211 INFO L78 Accepts]: Start accepts. Automaton has 41655 states and 165504 transitions. Word has length 5 [2022-11-02 20:40:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:01,211 INFO L495 AbstractCegarLoop]: Abstraction has 41655 states and 165504 transitions. [2022-11-02 20:40:01,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:40:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 41655 states and 165504 transitions. [2022-11-02 20:40:01,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:40:01,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:01,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:40:01,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-02 20:40:01,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:40:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash -79747852, now seen corresponding path program 1 times [2022-11-02 20:40:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:01,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307437990] [2022-11-02 20:40:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:01,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:01,318 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 20:40:01,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:01,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307437990] [2022-11-02 20:40:01,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307437990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:01,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:01,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:40:01,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687933236] [2022-11-02 20:40:01,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:01,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:01,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:01,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:01,321 INFO L87 Difference]: Start difference. First operand 41655 states and 165504 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:01,788 INFO L93 Difference]: Finished difference Result 41147 states and 163204 transitions. [2022-11-02 20:40:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:01,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:40:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:02,035 INFO L225 Difference]: With dead ends: 41147 [2022-11-02 20:40:02,035 INFO L226 Difference]: Without dead ends: 41147 [2022-11-02 20:40:02,035 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 20:40:02,036 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:02,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:40:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41147 states. [2022-11-02 20:40:03,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41147 to 41147. [2022-11-02 20:40:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41147 states, 40629 states have (on average 4.016933717295528) internal successors, (163204), 41146 states have internal predecessors, (163204), 0 states have call successors, (0), 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 20:40:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41147 states to 41147 states and 163204 transitions. [2022-11-02 20:40:04,427 INFO L78 Accepts]: Start accepts. Automaton has 41147 states and 163204 transitions. Word has length 9 [2022-11-02 20:40:04,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:04,427 INFO L495 AbstractCegarLoop]: Abstraction has 41147 states and 163204 transitions. [2022-11-02 20:40:04,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:04,428 INFO L276 IsEmpty]: Start isEmpty. Operand 41147 states and 163204 transitions. [2022-11-02 20:40:04,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:40:04,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:04,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:40:04,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-02 20:40:04,428 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:40:04,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:04,429 INFO L85 PathProgramCache]: Analyzing trace with hash -79747851, now seen corresponding path program 1 times [2022-11-02 20:40:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:04,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588680494] [2022-11-02 20:40:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:40:04,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:04,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588680494] [2022-11-02 20:40:04,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588680494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:04,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:04,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:40:04,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054892378] [2022-11-02 20:40:04,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:04,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:04,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:04,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:04,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:04,458 INFO L87 Difference]: Start difference. First operand 41147 states and 163204 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:04,906 INFO L93 Difference]: Finished difference Result 40639 states and 160904 transitions. [2022-11-02 20:40:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:04,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:40:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:05,164 INFO L225 Difference]: With dead ends: 40639 [2022-11-02 20:40:05,165 INFO L226 Difference]: Without dead ends: 40639 [2022-11-02 20:40:05,165 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 20:40:05,165 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:05,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:40:05,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40639 states. [2022-11-02 20:40:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40639 to 40639. [2022-11-02 20:40:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40639 states, 40128 states have (on average 4.009768740031898) internal successors, (160904), 40638 states have internal predecessors, (160904), 0 states have call successors, (0), 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 20:40:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40639 states to 40639 states and 160904 transitions. [2022-11-02 20:40:08,089 INFO L78 Accepts]: Start accepts. Automaton has 40639 states and 160904 transitions. Word has length 9 [2022-11-02 20:40:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:08,090 INFO L495 AbstractCegarLoop]: Abstraction has 40639 states and 160904 transitions. [2022-11-02 20:40:08,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand 40639 states and 160904 transitions. [2022-11-02 20:40:08,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:40:08,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:08,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:08,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-02 20:40:08,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:40:08,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:08,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1045559518, now seen corresponding path program 1 times [2022-11-02 20:40:08,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:08,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623905679] [2022-11-02 20:40:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:08,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:08,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:08,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623905679] [2022-11-02 20:40:08,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623905679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:08,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926111903] [2022-11-02 20:40:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:08,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:08,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:08,155 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:08,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:40:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:08,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:40:08,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:08,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:08,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926111903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:08,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:08,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:40:08,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445809833] [2022-11-02 20:40:08,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:08,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:40:08,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:40:08,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:40:08,345 INFO L87 Difference]: Start difference. First operand 40639 states and 160904 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 20:40:08,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:08,735 INFO L93 Difference]: Finished difference Result 40639 states and 160890 transitions. [2022-11-02 20:40:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:40:08,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:40:08,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:08,926 INFO L225 Difference]: With dead ends: 40639 [2022-11-02 20:40:08,926 INFO L226 Difference]: Without dead ends: 40639 [2022-11-02 20:40:08,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 20:40:08,927 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:08,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:40:09,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40639 states. [2022-11-02 20:40:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40639 to 40639. [2022-11-02 20:40:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40639 states, 40128 states have (on average 4.00941985645933) internal successors, (160890), 40638 states have internal predecessors, (160890), 0 states have call successors, (0), 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 20:40:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40639 states to 40639 states and 160890 transitions. [2022-11-02 20:40:10,693 INFO L78 Accepts]: Start accepts. Automaton has 40639 states and 160890 transitions. Word has length 11 [2022-11-02 20:40:10,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:10,693 INFO L495 AbstractCegarLoop]: Abstraction has 40639 states and 160890 transitions. [2022-11-02 20:40:10,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 20:40:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 40639 states and 160890 transitions. [2022-11-02 20:40:10,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:40:10,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:10,696 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:10,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:10,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-02 20:40:10,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:40:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:10,907 INFO L85 PathProgramCache]: Analyzing trace with hash 587578111, now seen corresponding path program 1 times [2022-11-02 20:40:10,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:10,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975387525] [2022-11-02 20:40:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:10,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:40:10,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:10,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975387525] [2022-11-02 20:40:10,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975387525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:10,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:10,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:40:10,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185974727] [2022-11-02 20:40:10,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:10,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:10,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:10,965 INFO L87 Difference]: Start difference. First operand 40639 states and 160890 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 20:40:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:12,074 INFO L93 Difference]: Finished difference Result 40575 states and 159738 transitions. [2022-11-02 20:40:12,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:12,074 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 23 [2022-11-02 20:40:12,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:12,282 INFO L225 Difference]: With dead ends: 40575 [2022-11-02 20:40:12,283 INFO L226 Difference]: Without dead ends: 40575 [2022-11-02 20:40:12,283 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 20:40:12,283 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:12,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:40:12,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40575 states. [2022-11-02 20:40:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40575 to 40575. [2022-11-02 20:40:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40575 states, 40080 states have (on average 3.9854790419161676) internal successors, (159738), 40574 states have internal predecessors, (159738), 0 states have call successors, (0), 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 20:40:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40575 states to 40575 states and 159738 transitions. [2022-11-02 20:40:14,033 INFO L78 Accepts]: Start accepts. Automaton has 40575 states and 159738 transitions. Word has length 23 [2022-11-02 20:40:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:14,033 INFO L495 AbstractCegarLoop]: Abstraction has 40575 states and 159738 transitions. [2022-11-02 20:40:14,033 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 20:40:14,033 INFO L276 IsEmpty]: Start isEmpty. Operand 40575 states and 159738 transitions. [2022-11-02 20:40:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:40:14,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:14,037 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:14,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-02 20:40:14,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:40:14,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash -424534175, now seen corresponding path program 1 times [2022-11-02 20:40:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:14,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182131607] [2022-11-02 20:40:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-02 20:40:14,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:14,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182131607] [2022-11-02 20:40:14,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182131607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:14,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:14,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:40:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31196405] [2022-11-02 20:40:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:14,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:14,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:14,101 INFO L87 Difference]: Start difference. First operand 40575 states and 159738 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:14,519 INFO L93 Difference]: Finished difference Result 35294 states and 141569 transitions. [2022-11-02 20:40:14,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:14,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 28 [2022-11-02 20:40:14,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:14,717 INFO L225 Difference]: With dead ends: 35294 [2022-11-02 20:40:14,717 INFO L226 Difference]: Without dead ends: 35294 [2022-11-02 20:40:14,718 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 20:40:14,718 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:14,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 5 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:40:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35294 states. [2022-11-02 20:40:16,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35294 to 35294. [2022-11-02 20:40:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35294 states, 35046 states have (on average 4.039519488672031) internal successors, (141569), 35293 states have internal predecessors, (141569), 0 states have call successors, (0), 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 20:40:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35294 states to 35294 states and 141569 transitions. [2022-11-02 20:40:16,393 INFO L78 Accepts]: Start accepts. Automaton has 35294 states and 141569 transitions. Word has length 28 [2022-11-02 20:40:16,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:16,394 INFO L495 AbstractCegarLoop]: Abstraction has 35294 states and 141569 transitions. [2022-11-02 20:40:16,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 20:40:16,394 INFO L276 IsEmpty]: Start isEmpty. Operand 35294 states and 141569 transitions. [2022-11-02 20:40:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:40:16,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:16,398 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:16,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-02 20:40:16,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:40:16,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:16,399 INFO L85 PathProgramCache]: Analyzing trace with hash -424534152, now seen corresponding path program 1 times [2022-11-02 20:40:16,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:16,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967179450] [2022-11-02 20:40:16,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:16,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:40:16,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:16,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967179450] [2022-11-02 20:40:16,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967179450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:16,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684458237] [2022-11-02 20:40:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:16,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:16,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:16,513 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:16,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:40:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:16,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:40:16,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:40:16,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:40:16,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684458237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:16,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:16,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-02 20:40:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753072642] [2022-11-02 20:40:16,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:16,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:40:16,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:16,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:40:16,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:40:16,815 INFO L87 Difference]: Start difference. First operand 35294 states and 141569 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 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 20:40:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:16,969 INFO L93 Difference]: Finished difference Result 2299 states and 10239 transitions. [2022-11-02 20:40:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:40:16,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 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 28 [2022-11-02 20:40:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:16,982 INFO L225 Difference]: With dead ends: 2299 [2022-11-02 20:40:16,982 INFO L226 Difference]: Without dead ends: 2299 [2022-11-02 20:40:16,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:40:16,984 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 145 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:16,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 12 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:40:16,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2022-11-02 20:40:17,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2022-11-02 20:40:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 4.455613577023499) internal successors, (10239), 2298 states have internal predecessors, (10239), 0 states have call successors, (0), 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 20:40:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 10239 transitions. [2022-11-02 20:40:17,062 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 10239 transitions. Word has length 28 [2022-11-02 20:40:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:17,063 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 10239 transitions. [2022-11-02 20:40:17,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 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 20:40:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 10239 transitions. [2022-11-02 20:40:17,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:40:17,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:17,069 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:17,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:17,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7128162f-edd2-4e06-91ba-515d347c0175/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-02 20:40:17,282 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:40:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash 493436908, now seen corresponding path program 1 times [2022-11-02 20:40:17,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:17,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969419656] [2022-11-02 20:40:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:17,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:40:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:17,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:40:17,342 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:40:17,342 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:40:17,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:40:17,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:40:17,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:40:17,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:40:17,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-02 20:40:17,343 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:17,344 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:40:17,344 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2022-11-02 20:40:17,368 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-11-02 20:40:17,371 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:40:17,371 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 122 transitions, 388 flow [2022-11-02 20:40:17,371 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 122 transitions, 388 flow [2022-11-02 20:40:17,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 122 transitions, 388 flow [2022-11-02 20:40:19,957 INFO L130 PetriNetUnfolder]: 2334/11778 cut-off events. [2022-11-02 20:40:19,957 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2022-11-02 20:40:20,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14155 conditions, 11778 events. 2334/11778 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 115931 event pairs, 1291 based on Foata normal form. 0/9684 useless extension candidates. Maximal degree in co-relation 6938. Up to 2304 conditions per place. [2022-11-02 20:40:20,552 INFO L118 LiptonReduction]: Number of co-enabled transitions 6390 [2022-11-02 20:40:22,769 INFO L133 LiptonReduction]: Checked pairs total: 9886 [2022-11-02 20:40:22,769 INFO L135 LiptonReduction]: Total number of compositions: 90 [2022-11-02 20:40:22,770 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 41 transitions, 226 flow [2022-11-02 20:40:27,884 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 142379 states, 140826 states have (on average 4.354799539857697) internal successors, (613269), 142378 states have internal predecessors, (613269), 0 states have call successors, (0), 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 20:40:27,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:40:27,899 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;@b098a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:40:27,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:40:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 142379 states, 140826 states have (on average 4.354799539857697) internal successors, (613269), 142378 states have internal predecessors, (613269), 0 states have call successors, (0), 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 20:40:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:40:28,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:28,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:40:28,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:40:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1621466010, now seen corresponding path program 1 times [2022-11-02 20:40:28,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:28,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412596318] [2022-11-02 20:40:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:28,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:28,089 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 20:40:28,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:28,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412596318] [2022-11-02 20:40:28,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412596318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:28,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:28,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:40:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338023617] [2022-11-02 20:40:28,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:28,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:28,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:28,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:28,245 INFO L87 Difference]: Start difference. First operand has 142379 states, 140826 states have (on average 4.354799539857697) internal successors, (613269), 142378 states have internal predecessors, (613269), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 20:40:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:30,371 INFO L93 Difference]: Finished difference Result 142375 states and 613262 transitions. [2022-11-02 20:40:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:30,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:40:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:31,154 INFO L225 Difference]: With dead ends: 142375 [2022-11-02 20:40:31,154 INFO L226 Difference]: Without dead ends: 122691 [2022-11-02 20:40:31,154 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 20:40:31,155 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:31,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:40:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122691 states.