./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/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_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/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_7298cd11-3f39-4327-b05e-92f32a7aab97/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 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- 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 20:58:57,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:58:57,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:58:57,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:58:57,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:58:57,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:58:57,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:58:57,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:58:57,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:58:57,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:58:57,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:58:57,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:58:57,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:58:57,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:58:57,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:58:57,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:58:57,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:58:57,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:58:57,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:58:57,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:58:57,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:58:57,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:58:57,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:58:57,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:58:57,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:58:57,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:58:57,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:58:57,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:58:57,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:58:57,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:58:57,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:58:57,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:58:57,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:58:57,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:58:57,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:58:57,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:58:57,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:58:57,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:58:57,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:58:57,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:58:57,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:58:57,564 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:58:57,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:58:57,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:58:57,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:58:57,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:58:57,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:58:57,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:58:57,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:58:57,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:58:57,604 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:58:57,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:58:57,605 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:58:57,606 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:58:57,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:58:57,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:58:57,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:58:57,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:58:57,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:58:57,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:58:57,607 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:58:57,607 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:58:57,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:58:57,608 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:58:57,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:58:57,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:58:57,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:58:57,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:58:57,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:57,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:58:57,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:58:57,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:58:57,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:58:57,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:58:57,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:58:57,611 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_7298cd11-3f39-4327-b05e-92f32a7aab97/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2022-11-02 20:58:57,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:58:57,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:58:57,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:58:57,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:58:57,961 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:58:57,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/stack_longest-2.i [2022-11-02 20:58:58,030 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/data/7be02ab42/f584f910f30e419c950df8ab5164fd58/FLAG5bbabe3b1 [2022-11-02 20:58:58,651 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:58:58,652 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/sv-benchmarks/c/pthread/stack_longest-2.i [2022-11-02 20:58:58,669 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/data/7be02ab42/f584f910f30e419c950df8ab5164fd58/FLAG5bbabe3b1 [2022-11-02 20:58:58,992 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/data/7be02ab42/f584f910f30e419c950df8ab5164fd58 [2022-11-02 20:58:58,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:58:58,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:58:58,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:58,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:58:59,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:58:59,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:58:59,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8ec05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59, skipping insertion in model container [2022-11-02 20:58:59,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:58:59,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:58:59,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:58:59,500 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_7298cd11-3f39-4327-b05e-92f32a7aab97/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2022-11-02 20:58:59,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:59,533 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:58:59,568 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_7298cd11-3f39-4327-b05e-92f32a7aab97/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2022-11-02 20:58:59,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:59,631 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:58:59,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59 WrapperNode [2022-11-02 20:58:59,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:59,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:59,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:58:59,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:58:59,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,681 INFO L138 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 158 [2022-11-02 20:58:59,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:59,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:58:59,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:58:59,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:58:59,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:58:59,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:58:59,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:58:59,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:58:59,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (1/1) ... [2022-11-02 20:58:59,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:59,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:59,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:58:59,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:58:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-02 20:58:59,816 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-02 20:58:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-02 20:58:59,817 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-02 20:58:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:58:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:58:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:58:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:58:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:58:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:58:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:58:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:58:59,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:58:59,820 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 20:59:00,007 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:00,009 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:00,389 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:00,399 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:00,399 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:59:00,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:00 BoogieIcfgContainer [2022-11-02 20:59:00,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:00,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:00,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:00,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:00,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:58:58" (1/3) ... [2022-11-02 20:59:00,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a022e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:00, skipping insertion in model container [2022-11-02 20:59:00,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:59" (2/3) ... [2022-11-02 20:59:00,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a022e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:00, skipping insertion in model container [2022-11-02 20:59:00,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:00" (3/3) ... [2022-11-02 20:59:00,414 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2022-11-02 20:59:00,423 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:59:00,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:00,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-02 20:59:00,435 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:59:00,576 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:59:00,610 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:59:00,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 186 transitions, 388 flow [2022-11-02 20:59:00,627 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 186 transitions, 388 flow [2022-11-02 20:59:00,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 186 transitions, 388 flow [2022-11-02 20:59:00,711 INFO L130 PetriNetUnfolder]: 10/184 cut-off events. [2022-11-02 20:59:00,711 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:59:00,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 10/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 473 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-11-02 20:59:00,728 INFO L118 LiptonReduction]: Number of co-enabled transitions 10242 [2022-11-02 20:59:06,627 INFO L133 LiptonReduction]: Checked pairs total: 15233 [2022-11-02 20:59:06,627 INFO L135 LiptonReduction]: Total number of compositions: 175 [2022-11-02 20:59:06,640 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 45 transitions, 106 flow [2022-11-02 20:59:06,733 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 536 states, 512 states have (on average 2.740234375) internal successors, (1403), 535 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:06,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:06,763 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;@7a920876, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:06,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-02 20:59:06,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 536 states, 512 states have (on average 2.740234375) internal successors, (1403), 535 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:06,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:59:06,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:06,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:06,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash -569273681, now seen corresponding path program 1 times [2022-11-02 20:59:06,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:06,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122562501] [2022-11-02 20:59:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:06,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:07,116 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 20:59:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:07,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122562501] [2022-11-02 20:59:07,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122562501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:07,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:07,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:07,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721006212] [2022-11-02 20:59:07,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:07,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:07,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:07,149 INFO L87 Difference]: Start difference. First operand has 536 states, 512 states have (on average 2.740234375) internal successors, (1403), 535 states have internal predecessors, (1403), 0 states have call successors, (0), 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, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:07,315 INFO L93 Difference]: Finished difference Result 768 states and 1932 transitions. [2022-11-02 20:59:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:07,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:59:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:07,346 INFO L225 Difference]: With dead ends: 768 [2022-11-02 20:59:07,346 INFO L226 Difference]: Without dead ends: 768 [2022-11-02 20:59:07,347 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 20:59:07,353 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 23 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:07,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-02 20:59:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 730. [2022-11-02 20:59:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 706 states have (on average 2.698300283286119) internal successors, (1905), 729 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:07,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1905 transitions. [2022-11-02 20:59:07,467 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1905 transitions. Word has length 7 [2022-11-02 20:59:07,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:07,467 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1905 transitions. [2022-11-02 20:59:07,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1905 transitions. [2022-11-02 20:59:07,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:59:07,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:07,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:07,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:59:07,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:07,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash -172144094, now seen corresponding path program 1 times [2022-11-02 20:59:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:07,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175047446] [2022-11-02 20:59:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:07,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:07,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175047446] [2022-11-02 20:59:07,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175047446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:07,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:07,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:07,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061341559] [2022-11-02 20:59:07,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:07,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:07,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:07,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:07,604 INFO L87 Difference]: Start difference. First operand 730 states and 1905 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 20:59:07,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:07,730 INFO L93 Difference]: Finished difference Result 1206 states and 3151 transitions. [2022-11-02 20:59:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:07,731 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 20:59:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:07,739 INFO L225 Difference]: With dead ends: 1206 [2022-11-02 20:59:07,745 INFO L226 Difference]: Without dead ends: 1206 [2022-11-02 20:59:07,746 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 20:59:07,747 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 29 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:07,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-11-02 20:59:07,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1150. [2022-11-02 20:59:07,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1126 states have (on average 2.72202486678508) internal successors, (3065), 1149 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3065 transitions. [2022-11-02 20:59:07,790 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3065 transitions. Word has length 9 [2022-11-02 20:59:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:07,791 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 3065 transitions. [2022-11-02 20:59:07,793 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 20:59:07,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3065 transitions. [2022-11-02 20:59:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:59:07,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:07,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:07,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:59:07,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:07,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:07,798 INFO L85 PathProgramCache]: Analyzing trace with hash -622490366, now seen corresponding path program 1 times [2022-11-02 20:59:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:07,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639173090] [2022-11-02 20:59:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:07,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:07,946 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 20:59:07,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:07,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639173090] [2022-11-02 20:59:07,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639173090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:07,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:07,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:07,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243740919] [2022-11-02 20:59:07,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:07,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:07,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:07,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:07,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:07,949 INFO L87 Difference]: Start difference. First operand 1150 states and 3065 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:08,059 INFO L93 Difference]: Finished difference Result 1384 states and 3677 transitions. [2022-11-02 20:59:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:59:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:08,067 INFO L225 Difference]: With dead ends: 1384 [2022-11-02 20:59:08,067 INFO L226 Difference]: Without dead ends: 1384 [2022-11-02 20:59:08,067 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 20:59:08,068 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:08,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-02 20:59:08,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-11-02 20:59:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1360 states have (on average 2.7036764705882352) internal successors, (3677), 1383 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 3677 transitions. [2022-11-02 20:59:08,107 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 3677 transitions. Word has length 11 [2022-11-02 20:59:08,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:08,108 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 3677 transitions. [2022-11-02 20:59:08,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 3677 transitions. [2022-11-02 20:59:08,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:59:08,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:08,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:08,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:59:08,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:08,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash -396045679, now seen corresponding path program 1 times [2022-11-02 20:59:08,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:08,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743720834] [2022-11-02 20:59:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:08,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:08,184 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 20:59:08,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:08,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743720834] [2022-11-02 20:59:08,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743720834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:08,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517080013] [2022-11-02 20:59:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:08,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:08,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:08,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:08,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:59:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:08,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:08,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:08,359 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 20:59:08,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:08,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517080013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:08,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:08,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:59:08,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718444747] [2022-11-02 20:59:08,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:08,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:08,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:08,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:08,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:08,361 INFO L87 Difference]: Start difference. First operand 1384 states and 3677 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:08,519 INFO L93 Difference]: Finished difference Result 1384 states and 3594 transitions. [2022-11-02 20:59:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:08,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:59:08,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:08,527 INFO L225 Difference]: With dead ends: 1384 [2022-11-02 20:59:08,527 INFO L226 Difference]: Without dead ends: 1384 [2022-11-02 20:59:08,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 20:59:08,528 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 62 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:08,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-02 20:59:08,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1320. [2022-11-02 20:59:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1301 states have (on average 2.687163720215219) internal successors, (3496), 1319 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 3496 transitions. [2022-11-02 20:59:08,609 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 3496 transitions. Word has length 13 [2022-11-02 20:59:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:08,610 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 3496 transitions. [2022-11-02 20:59:08,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 3496 transitions. [2022-11-02 20:59:08,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:59:08,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:08,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:08,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:08,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:08,840 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:08,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash -396045722, now seen corresponding path program 1 times [2022-11-02 20:59:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:08,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599135811] [2022-11-02 20:59:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:08,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:08,903 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 20:59:08,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:08,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599135811] [2022-11-02 20:59:08,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599135811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:08,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:08,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:08,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557283454] [2022-11-02 20:59:08,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:08,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:08,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:08,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:08,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:08,907 INFO L87 Difference]: Start difference. First operand 1320 states and 3496 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:09,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:09,008 INFO L93 Difference]: Finished difference Result 1256 states and 3315 transitions. [2022-11-02 20:59:09,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:09,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:59:09,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:09,015 INFO L225 Difference]: With dead ends: 1256 [2022-11-02 20:59:09,015 INFO L226 Difference]: Without dead ends: 1220 [2022-11-02 20:59:09,016 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 20:59:09,018 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 29 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:09,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-11-02 20:59:09,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 802. [2022-11-02 20:59:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 788 states have (on average 2.6104060913705585) internal successors, (2057), 801 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:09,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2057 transitions. [2022-11-02 20:59:09,051 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2057 transitions. Word has length 13 [2022-11-02 20:59:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:09,051 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 2057 transitions. [2022-11-02 20:59:09,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:09,052 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2057 transitions. [2022-11-02 20:59:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:59:09,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:09,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:09,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:59:09,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:09,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:09,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1456452304, now seen corresponding path program 1 times [2022-11-02 20:59:09,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:09,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895040854] [2022-11-02 20:59:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:09,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:09,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:09,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895040854] [2022-11-02 20:59:09,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895040854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:09,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317960949] [2022-11-02 20:59:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:09,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:09,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:09,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:09,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:59:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:09,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:09,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:09,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:09,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317960949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:09,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:09,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-02 20:59:09,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139451465] [2022-11-02 20:59:09,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:09,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:59:09,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:59:09,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:59:09,388 INFO L87 Difference]: Start difference. First operand 802 states and 2057 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:09,880 INFO L93 Difference]: Finished difference Result 1804 states and 4592 transitions. [2022-11-02 20:59:09,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:59:09,881 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:59:09,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:09,890 INFO L225 Difference]: With dead ends: 1804 [2022-11-02 20:59:09,891 INFO L226 Difference]: Without dead ends: 1788 [2022-11-02 20:59:09,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:59:09,894 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 200 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:09,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 16 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2022-11-02 20:59:09,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1550. [2022-11-02 20:59:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1536 states have (on average 2.7135416666666665) internal successors, (4168), 1549 states have internal predecessors, (4168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 4168 transitions. [2022-11-02 20:59:09,956 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 4168 transitions. Word has length 15 [2022-11-02 20:59:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:09,956 INFO L495 AbstractCegarLoop]: Abstraction has 1550 states and 4168 transitions. [2022-11-02 20:59:09,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 4168 transitions. [2022-11-02 20:59:09,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:59:09,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:09,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:09,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:10,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:59:10,171 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:10,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1340923433, now seen corresponding path program 1 times [2022-11-02 20:59:10,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:10,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373283603] [2022-11-02 20:59:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:10,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:10,282 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 20:59:10,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:10,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373283603] [2022-11-02 20:59:10,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373283603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:10,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:10,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:10,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866393195] [2022-11-02 20:59:10,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:10,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:10,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:10,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:10,285 INFO L87 Difference]: Start difference. First operand 1550 states and 4168 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:10,370 INFO L93 Difference]: Finished difference Result 844 states and 2086 transitions. [2022-11-02 20:59:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:10,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:59:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:10,376 INFO L225 Difference]: With dead ends: 844 [2022-11-02 20:59:10,377 INFO L226 Difference]: Without dead ends: 844 [2022-11-02 20:59:10,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:10,378 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:10,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-11-02 20:59:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 802. [2022-11-02 20:59:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 790 states have (on average 2.4658227848101264) internal successors, (1948), 801 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1948 transitions. [2022-11-02 20:59:10,410 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1948 transitions. Word has length 16 [2022-11-02 20:59:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:10,410 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1948 transitions. [2022-11-02 20:59:10,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1948 transitions. [2022-11-02 20:59:10,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:59:10,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:10,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:10,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:59:10,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:10,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:10,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2094092976, now seen corresponding path program 1 times [2022-11-02 20:59:10,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:10,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184598638] [2022-11-02 20:59:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:10,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:10,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:10,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184598638] [2022-11-02 20:59:10,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184598638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:10,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317473880] [2022-11-02 20:59:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:10,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:10,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:10,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:59:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:10,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:59:10,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:10,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:10,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317473880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:10,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:10,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:59:10,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407138393] [2022-11-02 20:59:10,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:10,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:59:10,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:59:10,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:10,713 INFO L87 Difference]: Start difference. First operand 802 states and 1948 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:10,871 INFO L93 Difference]: Finished difference Result 904 states and 2163 transitions. [2022-11-02 20:59:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:59:10,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:59:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:10,876 INFO L225 Difference]: With dead ends: 904 [2022-11-02 20:59:10,876 INFO L226 Difference]: Without dead ends: 900 [2022-11-02 20:59:10,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:59:10,878 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 46 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:10,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 4 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:10,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-11-02 20:59:10,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 872. [2022-11-02 20:59:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 862 states have (on average 2.437354988399072) internal successors, (2101), 871 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2101 transitions. [2022-11-02 20:59:10,908 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2101 transitions. Word has length 16 [2022-11-02 20:59:10,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:10,909 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 2101 transitions. [2022-11-02 20:59:10,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2101 transitions. [2022-11-02 20:59:10,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:59:10,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:10,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:59:10,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:11,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:11,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:11,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash 724639491, now seen corresponding path program 1 times [2022-11-02 20:59:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:11,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099952773] [2022-11-02 20:59:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:11,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:11,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099952773] [2022-11-02 20:59:11,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099952773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:11,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:11,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683438669] [2022-11-02 20:59:11,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:11,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:11,196 INFO L87 Difference]: Start difference. First operand 872 states and 2101 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 20:59:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:11,273 INFO L93 Difference]: Finished difference Result 806 states and 1906 transitions. [2022-11-02 20:59:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:11,273 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 19 [2022-11-02 20:59:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:11,277 INFO L225 Difference]: With dead ends: 806 [2022-11-02 20:59:11,277 INFO L226 Difference]: Without dead ends: 806 [2022-11-02 20:59:11,278 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 20:59:11,279 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:11,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-11-02 20:59:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2022-11-02 20:59:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 799 states have (on average 2.3854818523153942) internal successors, (1906), 805 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:11,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1906 transitions. [2022-11-02 20:59:11,303 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1906 transitions. Word has length 19 [2022-11-02 20:59:11,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:11,303 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1906 transitions. [2022-11-02 20:59:11,303 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 20:59:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1906 transitions. [2022-11-02 20:59:11,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:59:11,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:11,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:59:11,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:59:11,305 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:11,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:11,306 INFO L85 PathProgramCache]: Analyzing trace with hash 724639567, now seen corresponding path program 1 times [2022-11-02 20:59:11,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:11,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689691413] [2022-11-02 20:59:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:11,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:11,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:11,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689691413] [2022-11-02 20:59:11,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689691413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:11,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206600990] [2022-11-02 20:59:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:11,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:11,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:11,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:11,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:59:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:11,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:11,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:11,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:11,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206600990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:11,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:11,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:59:11,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504157065] [2022-11-02 20:59:11,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:11,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:11,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:11,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:11,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:11,567 INFO L87 Difference]: Start difference. First operand 806 states and 1906 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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 20:59:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:11,697 INFO L93 Difference]: Finished difference Result 740 states and 1711 transitions. [2022-11-02 20:59:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:11,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 20:59:11,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:11,701 INFO L225 Difference]: With dead ends: 740 [2022-11-02 20:59:11,701 INFO L226 Difference]: Without dead ends: 738 [2022-11-02 20:59:11,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 20:59:11,702 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 41 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:11,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 6 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:11,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-11-02 20:59:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 700. [2022-11-02 20:59:11,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 696 states have (on average 2.3060344827586206) internal successors, (1605), 699 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:11,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1605 transitions. [2022-11-02 20:59:11,722 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1605 transitions. Word has length 19 [2022-11-02 20:59:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:11,722 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1605 transitions. [2022-11-02 20:59:11,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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 20:59:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1605 transitions. [2022-11-02 20:59:11,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 20:59:11,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:11,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:11,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:11,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:59:11,938 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:11,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:11,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1817122061, now seen corresponding path program 1 times [2022-11-02 20:59:11,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:11,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887827279] [2022-11-02 20:59:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:11,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:12,051 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 20:59:12,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:12,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887827279] [2022-11-02 20:59:12,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887827279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:12,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:12,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405465553] [2022-11-02 20:59:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:12,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:12,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:12,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:12,054 INFO L87 Difference]: Start difference. First operand 700 states and 1605 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:12,161 INFO L93 Difference]: Finished difference Result 882 states and 2044 transitions. [2022-11-02 20:59:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:12,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-02 20:59:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:12,167 INFO L225 Difference]: With dead ends: 882 [2022-11-02 20:59:12,167 INFO L226 Difference]: Without dead ends: 810 [2022-11-02 20:59:12,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:12,168 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:12,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:12,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-11-02 20:59:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 696. [2022-11-02 20:59:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 692 states have (on average 2.28757225433526) internal successors, (1583), 695 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1583 transitions. [2022-11-02 20:59:12,187 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1583 transitions. Word has length 26 [2022-11-02 20:59:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:12,188 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 1583 transitions. [2022-11-02 20:59:12,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1583 transitions. [2022-11-02 20:59:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:59:12,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:12,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:12,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:59:12,198 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:12,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:12,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1676797043, now seen corresponding path program 1 times [2022-11-02 20:59:12,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:12,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042968710] [2022-11-02 20:59:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:12,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:12,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042968710] [2022-11-02 20:59:12,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042968710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:12,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:12,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:12,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418514986] [2022-11-02 20:59:12,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:12,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:12,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:12,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:12,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:12,323 INFO L87 Difference]: Start difference. First operand 696 states and 1583 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:12,389 INFO L93 Difference]: Finished difference Result 690 states and 1552 transitions. [2022-11-02 20:59:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:12,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-11-02 20:59:12,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:12,392 INFO L225 Difference]: With dead ends: 690 [2022-11-02 20:59:12,393 INFO L226 Difference]: Without dead ends: 690 [2022-11-02 20:59:12,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:12,394 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:12,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-02 20:59:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 632. [2022-11-02 20:59:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 629 states have (on average 2.3227344992050876) internal successors, (1461), 631 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1461 transitions. [2022-11-02 20:59:12,413 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1461 transitions. Word has length 27 [2022-11-02 20:59:12,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:12,413 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1461 transitions. [2022-11-02 20:59:12,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,414 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1461 transitions. [2022-11-02 20:59:12,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:59:12,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:12,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:12,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:59:12,417 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:12,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:12,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1676797042, now seen corresponding path program 1 times [2022-11-02 20:59:12,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:12,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527492034] [2022-11-02 20:59:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:12,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:12,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:12,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527492034] [2022-11-02 20:59:12,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527492034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:12,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075165372] [2022-11-02 20:59:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:12,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:12,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:12,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:12,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:59:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:12,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:59:12,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:12,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:12,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075165372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:12,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:12,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2022-11-02 20:59:12,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54677081] [2022-11-02 20:59:12,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:12,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:59:12,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:12,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:59:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:59:12,753 INFO L87 Difference]: Start difference. First operand 632 states and 1461 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:12,921 INFO L93 Difference]: Finished difference Result 714 states and 1653 transitions. [2022-11-02 20:59:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:59:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-11-02 20:59:12,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:12,925 INFO L225 Difference]: With dead ends: 714 [2022-11-02 20:59:12,925 INFO L226 Difference]: Without dead ends: 688 [2022-11-02 20:59:12,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:59:12,926 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 48 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:12,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-02 20:59:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 604. [2022-11-02 20:59:12,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 602 states have (on average 2.335548172757475) internal successors, (1406), 603 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1406 transitions. [2022-11-02 20:59:12,958 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1406 transitions. Word has length 27 [2022-11-02 20:59:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:12,958 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 1406 transitions. [2022-11-02 20:59:12,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1406 transitions. [2022-11-02 20:59:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 20:59:12,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:12,960 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-02 20:59:13,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:13,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:59:13,187 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:13,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:13,188 INFO L85 PathProgramCache]: Analyzing trace with hash -384478993, now seen corresponding path program 1 times [2022-11-02 20:59:13,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:13,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540275966] [2022-11-02 20:59:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:13,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:13,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540275966] [2022-11-02 20:59:13,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540275966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:13,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381319999] [2022-11-02 20:59:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:13,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:13,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:13,364 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:13,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:59:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:59:13,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:13,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:13,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381319999] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:13,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:13,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-02 20:59:13,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15276825] [2022-11-02 20:59:13,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:13,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:59:13,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:13,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:59:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:13,710 INFO L87 Difference]: Start difference. First operand 604 states and 1406 transitions. Second operand has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:14,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:14,193 INFO L93 Difference]: Finished difference Result 1336 states and 3086 transitions. [2022-11-02 20:59:14,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:59:14,193 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-02 20:59:14,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:14,200 INFO L225 Difference]: With dead ends: 1336 [2022-11-02 20:59:14,200 INFO L226 Difference]: Without dead ends: 1336 [2022-11-02 20:59:14,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:59:14,201 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 267 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:14,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 5 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:14,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2022-11-02 20:59:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1104. [2022-11-02 20:59:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1102 states have (on average 2.3448275862068964) internal successors, (2584), 1103 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 2584 transitions. [2022-11-02 20:59:14,239 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 2584 transitions. Word has length 32 [2022-11-02 20:59:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:14,239 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 2584 transitions. [2022-11-02 20:59:14,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 2584 transitions. [2022-11-02 20:59:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:59:14,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:14,241 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:14,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-02 20:59:14,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:59:14,468 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:14,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1638823213, now seen corresponding path program 2 times [2022-11-02 20:59:14,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:14,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110039037] [2022-11-02 20:59:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:14,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:59:14,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:14,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110039037] [2022-11-02 20:59:14,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110039037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:14,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566185384] [2022-11-02 20:59:14,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:14,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:14,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:14,768 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:14,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:59:14,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:59:14,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:14,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:59:14,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:15,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:15,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566185384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:15,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:15,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2022-11-02 20:59:15,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667316967] [2022-11-02 20:59:15,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:15,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:59:15,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:59:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:59:15,077 INFO L87 Difference]: Start difference. First operand 1104 states and 2584 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:15,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:15,443 INFO L93 Difference]: Finished difference Result 1510 states and 3490 transitions. [2022-11-02 20:59:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 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 35 [2022-11-02 20:59:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:15,451 INFO L225 Difference]: With dead ends: 1510 [2022-11-02 20:59:15,451 INFO L226 Difference]: Without dead ends: 1510 [2022-11-02 20:59:15,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:59:15,455 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 99 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:15,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 6 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:15,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2022-11-02 20:59:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1344. [2022-11-02 20:59:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1342 states have (on average 2.343517138599106) internal successors, (3145), 1343 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 3145 transitions. [2022-11-02 20:59:15,495 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 3145 transitions. Word has length 35 [2022-11-02 20:59:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:15,497 INFO L495 AbstractCegarLoop]: Abstraction has 1344 states and 3145 transitions. [2022-11-02 20:59:15,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 3145 transitions. [2022-11-02 20:59:15,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:59:15,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:15,500 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:15,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:15,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:59:15,727 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:15,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash -257133717, now seen corresponding path program 3 times [2022-11-02 20:59:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:15,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568376830] [2022-11-02 20:59:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:15,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:16,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:16,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568376830] [2022-11-02 20:59:16,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568376830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:16,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769523034] [2022-11-02 20:59:16,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:59:16,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:16,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:16,136 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:16,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:59:16,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-02 20:59:16,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:16,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:59:16,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:16,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:16,742 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:16,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769523034] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:16,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:16,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-11-02 20:59:16,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986053798] [2022-11-02 20:59:16,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:16,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 20:59:16,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:16,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 20:59:16,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:59:16,745 INFO L87 Difference]: Start difference. First operand 1344 states and 3145 transitions. Second operand has 21 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:17,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:17,441 INFO L93 Difference]: Finished difference Result 2050 states and 4738 transitions. [2022-11-02 20:59:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:59:17,442 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 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 51 [2022-11-02 20:59:17,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:17,452 INFO L225 Difference]: With dead ends: 2050 [2022-11-02 20:59:17,452 INFO L226 Difference]: Without dead ends: 2050 [2022-11-02 20:59:17,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 20:59:17,453 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 298 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:17,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 8 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:59:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2022-11-02 20:59:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1248. [2022-11-02 20:59:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1246 states have (on average 2.3434991974317816) internal successors, (2920), 1247 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:17,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 2920 transitions. [2022-11-02 20:59:17,506 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 2920 transitions. Word has length 51 [2022-11-02 20:59:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:17,507 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 2920 transitions. [2022-11-02 20:59:17,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:17,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 2920 transitions. [2022-11-02 20:59:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:59:17,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:17,511 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2022-11-02 20:59:17,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:17,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:59:17,726 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:17,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1446209173, now seen corresponding path program 2 times [2022-11-02 20:59:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:17,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358633598] [2022-11-02 20:59:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:17,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:18,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:18,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358633598] [2022-11-02 20:59:18,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358633598] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:18,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338314764] [2022-11-02 20:59:18,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:18,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:18,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:18,262 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:18,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:59:18,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:59:18,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:18,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:59:18,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:18,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:18,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338314764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:18,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:18,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-11-02 20:59:18,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318339069] [2022-11-02 20:59:18,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:18,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 20:59:18,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:18,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 20:59:18,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:59:18,939 INFO L87 Difference]: Start difference. First operand 1248 states and 2920 transitions. Second operand has 34 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:19,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:19,929 INFO L93 Difference]: Finished difference Result 3172 states and 7333 transitions. [2022-11-02 20:59:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 20:59:19,929 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 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 64 [2022-11-02 20:59:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:19,940 INFO L225 Difference]: With dead ends: 3172 [2022-11-02 20:59:19,940 INFO L226 Difference]: Without dead ends: 3172 [2022-11-02 20:59:19,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=737, Invalid=1713, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:59:19,942 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 630 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:19,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 6 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:59:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2022-11-02 20:59:20,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 2652. [2022-11-02 20:59:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2650 states have (on average 2.3573584905660376) internal successors, (6247), 2651 states have internal predecessors, (6247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:20,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 6247 transitions. [2022-11-02 20:59:20,027 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 6247 transitions. Word has length 64 [2022-11-02 20:59:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:20,028 INFO L495 AbstractCegarLoop]: Abstraction has 2652 states and 6247 transitions. [2022-11-02 20:59:20,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 6247 transitions. [2022-11-02 20:59:20,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:59:20,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:20,032 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:20,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:20,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:59:20,247 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:20,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:20,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1944520279, now seen corresponding path program 4 times [2022-11-02 20:59:20,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:20,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805443187] [2022-11-02 20:59:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:20,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:20,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805443187] [2022-11-02 20:59:20,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805443187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:20,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637348109] [2022-11-02 20:59:20,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:59:20,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:20,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:20,844 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:20,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:59:21,102 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:59:21,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:21,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:59:21,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:21,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:21,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637348109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:21,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:21,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2022-11-02 20:59:21,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238548165] [2022-11-02 20:59:21,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:21,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:59:21,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:21,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:59:21,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:59:21,495 INFO L87 Difference]: Start difference. First operand 2652 states and 6247 transitions. Second operand has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:22,455 INFO L93 Difference]: Finished difference Result 3832 states and 8873 transitions. [2022-11-02 20:59:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 20:59:22,455 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 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 67 [2022-11-02 20:59:22,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:22,471 INFO L225 Difference]: With dead ends: 3832 [2022-11-02 20:59:22,471 INFO L226 Difference]: Without dead ends: 3832 [2022-11-02 20:59:22,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 20:59:22,473 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 394 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:22,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 10 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:59:22,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2022-11-02 20:59:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 2812. [2022-11-02 20:59:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2810 states have (on average 2.3619217081850534) internal successors, (6637), 2811 states have internal predecessors, (6637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 6637 transitions. [2022-11-02 20:59:22,600 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 6637 transitions. Word has length 67 [2022-11-02 20:59:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:22,601 INFO L495 AbstractCegarLoop]: Abstraction has 2812 states and 6637 transitions. [2022-11-02 20:59:22,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 6637 transitions. [2022-11-02 20:59:22,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:59:22,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:22,609 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:22,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:22,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:59:22,831 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:22,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:22,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1356423668, now seen corresponding path program 1 times [2022-11-02 20:59:22,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:22,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568699126] [2022-11-02 20:59:22,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:22,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:59:23,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:23,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568699126] [2022-11-02 20:59:23,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568699126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:23,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545202719] [2022-11-02 20:59:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:23,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:23,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:23,556 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:23,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:59:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:23,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:59:23,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:23,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:24,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545202719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:24,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:24,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 26 [2022-11-02 20:59:24,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615399084] [2022-11-02 20:59:24,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:24,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:59:24,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:24,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:59:24,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:59:24,210 INFO L87 Difference]: Start difference. First operand 2812 states and 6637 transitions. Second operand has 28 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:25,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:25,079 INFO L93 Difference]: Finished difference Result 5136 states and 11885 transitions. [2022-11-02 20:59:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:59:25,080 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 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 76 [2022-11-02 20:59:25,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:25,095 INFO L225 Difference]: With dead ends: 5136 [2022-11-02 20:59:25,095 INFO L226 Difference]: Without dead ends: 5136 [2022-11-02 20:59:25,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=442, Invalid=1538, Unknown=0, NotChecked=0, Total=1980 [2022-11-02 20:59:25,097 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 437 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:25,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 9 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:59:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5136 states. [2022-11-02 20:59:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5136 to 3346. [2022-11-02 20:59:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3346 states, 3344 states have (on average 2.367224880382775) internal successors, (7916), 3345 states have internal predecessors, (7916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 7916 transitions. [2022-11-02 20:59:25,195 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 7916 transitions. Word has length 76 [2022-11-02 20:59:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:25,196 INFO L495 AbstractCegarLoop]: Abstraction has 3346 states and 7916 transitions. [2022-11-02 20:59:25,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 7916 transitions. [2022-11-02 20:59:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-02 20:59:25,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:25,203 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:25,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:25,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:25,419 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:25,420 INFO L85 PathProgramCache]: Analyzing trace with hash 721325605, now seen corresponding path program 5 times [2022-11-02 20:59:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:25,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968813587] [2022-11-02 20:59:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:25,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:26,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:26,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968813587] [2022-11-02 20:59:26,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968813587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:26,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469490507] [2022-11-02 20:59:26,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:59:26,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:26,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:26,420 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:26,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:59:27,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-02 20:59:27,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:27,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:59:27,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:27,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:59:28,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469490507] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:28,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:28,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 43 [2022-11-02 20:59:28,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97524814] [2022-11-02 20:59:28,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:28,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-02 20:59:28,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-02 20:59:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1497, Unknown=0, NotChecked=0, Total=1980 [2022-11-02 20:59:28,199 INFO L87 Difference]: Start difference. First operand 3346 states and 7916 transitions. Second operand has 45 states, 44 states have (on average 4.454545454545454) internal successors, (196), 44 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:29,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:29,792 INFO L93 Difference]: Finished difference Result 7594 states and 17498 transitions. [2022-11-02 20:59:29,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-02 20:59:29,793 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 4.454545454545454) internal successors, (196), 44 states have internal predecessors, (196), 0 states have call successors, (0), 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 99 [2022-11-02 20:59:29,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:29,817 INFO L225 Difference]: With dead ends: 7594 [2022-11-02 20:59:29,817 INFO L226 Difference]: Without dead ends: 7594 [2022-11-02 20:59:29,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1658 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1523, Invalid=5119, Unknown=0, NotChecked=0, Total=6642 [2022-11-02 20:59:29,820 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 802 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:29,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 7 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:59:29,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2022-11-02 20:59:29,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 3942. [2022-11-02 20:59:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3940 states have (on average 2.3573604060913707) internal successors, (9288), 3941 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 9288 transitions. [2022-11-02 20:59:29,984 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 9288 transitions. Word has length 99 [2022-11-02 20:59:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:29,984 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 9288 transitions. [2022-11-02 20:59:29,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 4.454545454545454) internal successors, (196), 44 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:29,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 9288 transitions. [2022-11-02 20:59:29,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-02 20:59:29,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:29,997 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:30,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:30,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:30,213 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:30,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash -815818963, now seen corresponding path program 2 times [2022-11-02 20:59:30,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:30,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419904057] [2022-11-02 20:59:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:30,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:31,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:31,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419904057] [2022-11-02 20:59:31,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419904057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:31,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625021595] [2022-11-02 20:59:31,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:31,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:31,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:31,154 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:31,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:59:31,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:59:31,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:31,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:59:31,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:31,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:32,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625021595] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:32,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:32,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 38 [2022-11-02 20:59:32,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572116927] [2022-11-02 20:59:32,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:32,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-02 20:59:32,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:32,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-02 20:59:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 20:59:32,088 INFO L87 Difference]: Start difference. First operand 3942 states and 9288 transitions. Second operand has 40 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:33,323 INFO L93 Difference]: Finished difference Result 8490 states and 19698 transitions. [2022-11-02 20:59:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-02 20:59:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 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 100 [2022-11-02 20:59:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:33,347 INFO L225 Difference]: With dead ends: 8490 [2022-11-02 20:59:33,347 INFO L226 Difference]: Without dead ends: 8490 [2022-11-02 20:59:33,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1017, Invalid=3539, Unknown=0, NotChecked=0, Total=4556 [2022-11-02 20:59:33,349 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 838 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:33,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 9 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:59:33,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2022-11-02 20:59:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 4714. [2022-11-02 20:59:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4714 states, 4712 states have (on average 2.390916808149406) internal successors, (11266), 4713 states have internal predecessors, (11266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4714 states to 4714 states and 11266 transitions. [2022-11-02 20:59:33,479 INFO L78 Accepts]: Start accepts. Automaton has 4714 states and 11266 transitions. Word has length 100 [2022-11-02 20:59:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:33,480 INFO L495 AbstractCegarLoop]: Abstraction has 4714 states and 11266 transitions. [2022-11-02 20:59:33,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4714 states and 11266 transitions. [2022-11-02 20:59:33,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:59:33,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:33,489 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:33,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:33,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:33,716 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1945287981, now seen corresponding path program 3 times [2022-11-02 20:59:33,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:33,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328592012] [2022-11-02 20:59:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:33,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:59:34,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:34,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328592012] [2022-11-02 20:59:34,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328592012] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:34,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035388945] [2022-11-02 20:59:34,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:59:34,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:34,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:34,765 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:34,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:59:35,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-02 20:59:35,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:35,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:59:35,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:59:35,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:59:35,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035388945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:35,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:35,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 33 [2022-11-02 20:59:35,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803609209] [2022-11-02 20:59:35,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:35,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 20:59:35,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:35,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 20:59:35,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:59:35,958 INFO L87 Difference]: Start difference. First operand 4714 states and 11266 transitions. Second operand has 35 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:36,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:36,937 INFO L93 Difference]: Finished difference Result 12576 states and 29459 transitions. [2022-11-02 20:59:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 20:59:36,937 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 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 101 [2022-11-02 20:59:36,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:36,968 INFO L225 Difference]: With dead ends: 12576 [2022-11-02 20:59:36,968 INFO L226 Difference]: Without dead ends: 12576 [2022-11-02 20:59:36,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=678, Invalid=2628, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 20:59:36,970 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 478 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:36,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 10 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:59:36,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12576 states. [2022-11-02 20:59:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12576 to 7852. [2022-11-02 20:59:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7852 states, 7850 states have (on average 2.449808917197452) internal successors, (19231), 7851 states have internal predecessors, (19231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7852 states to 7852 states and 19231 transitions. [2022-11-02 20:59:37,182 INFO L78 Accepts]: Start accepts. Automaton has 7852 states and 19231 transitions. Word has length 101 [2022-11-02 20:59:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:37,183 INFO L495 AbstractCegarLoop]: Abstraction has 7852 states and 19231 transitions. [2022-11-02 20:59:37,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 7852 states and 19231 transitions. [2022-11-02 20:59:37,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 20:59:37,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:37,203 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:37,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:37,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-02 20:59:37,423 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:37,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:37,424 INFO L85 PathProgramCache]: Analyzing trace with hash 872887630, now seen corresponding path program 4 times [2022-11-02 20:59:37,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:37,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972863693] [2022-11-02 20:59:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:37,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:38,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:38,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972863693] [2022-11-02 20:59:38,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972863693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:38,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606625842] [2022-11-02 20:59:38,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:59:38,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:38,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:38,864 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:38,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:59:39,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:59:39,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:39,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:59:39,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:39,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:40,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606625842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:40,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:40,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2022-11-02 20:59:40,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392575498] [2022-11-02 20:59:40,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:40,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 20:59:40,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:40,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 20:59:40,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=2047, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:59:40,061 INFO L87 Difference]: Start difference. First operand 7852 states and 19231 transitions. Second operand has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:42,032 INFO L93 Difference]: Finished difference Result 18946 states and 45296 transitions. [2022-11-02 20:59:42,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-02 20:59:42,033 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 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 124 [2022-11-02 20:59:42,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:42,073 INFO L225 Difference]: With dead ends: 18946 [2022-11-02 20:59:42,073 INFO L226 Difference]: Without dead ends: 18946 [2022-11-02 20:59:42,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2164 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1856, Invalid=6516, Unknown=0, NotChecked=0, Total=8372 [2022-11-02 20:59:42,076 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1044 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:42,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 10 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:59:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18946 states. [2022-11-02 20:59:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18946 to 9356. [2022-11-02 20:59:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9356 states, 9354 states have (on average 2.460017104981826) internal successors, (23011), 9355 states have internal predecessors, (23011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9356 states to 9356 states and 23011 transitions. [2022-11-02 20:59:42,470 INFO L78 Accepts]: Start accepts. Automaton has 9356 states and 23011 transitions. Word has length 124 [2022-11-02 20:59:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:42,471 INFO L495 AbstractCegarLoop]: Abstraction has 9356 states and 23011 transitions. [2022-11-02 20:59:42,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 9356 states and 23011 transitions. [2022-11-02 20:59:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 20:59:42,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:42,496 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:42,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:42,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-02 20:59:42,717 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:42,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:42,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2068847302, now seen corresponding path program 5 times [2022-11-02 20:59:42,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:42,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28461922] [2022-11-02 20:59:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:59:44,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:44,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28461922] [2022-11-02 20:59:44,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28461922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:44,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132426347] [2022-11-02 20:59:44,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:59:44,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:44,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:44,028 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:44,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:59:44,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-11-02 20:59:44,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:44,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:59:44,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:45,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:45,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132426347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:45,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:45,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 23] total 50 [2022-11-02 20:59:45,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859177110] [2022-11-02 20:59:45,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:45,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 20:59:45,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:45,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 20:59:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=2040, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:59:45,903 INFO L87 Difference]: Start difference. First operand 9356 states and 23011 transitions. Second operand has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:47,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:47,780 INFO L93 Difference]: Finished difference Result 20674 states and 49232 transitions. [2022-11-02 20:59:47,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-02 20:59:47,781 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 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 124 [2022-11-02 20:59:47,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:47,815 INFO L225 Difference]: With dead ends: 20674 [2022-11-02 20:59:47,815 INFO L226 Difference]: Without dead ends: 20674 [2022-11-02 20:59:47,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1780, Invalid=6052, Unknown=0, NotChecked=0, Total=7832 [2022-11-02 20:59:47,817 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1209 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:47,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 11 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:59:47,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20674 states. [2022-11-02 20:59:48,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20674 to 12254. [2022-11-02 20:59:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12254 states, 12252 states have (on average 2.4995102840352597) internal successors, (30624), 12253 states have internal predecessors, (30624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12254 states to 12254 states and 30624 transitions. [2022-11-02 20:59:48,205 INFO L78 Accepts]: Start accepts. Automaton has 12254 states and 30624 transitions. Word has length 124 [2022-11-02 20:59:48,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:48,205 INFO L495 AbstractCegarLoop]: Abstraction has 12254 states and 30624 transitions. [2022-11-02 20:59:48,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:48,206 INFO L276 IsEmpty]: Start isEmpty. Operand 12254 states and 30624 transitions. [2022-11-02 20:59:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-02 20:59:48,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:48,229 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:48,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:48,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-02 20:59:48,443 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:48,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:48,445 INFO L85 PathProgramCache]: Analyzing trace with hash -568788110, now seen corresponding path program 6 times [2022-11-02 20:59:48,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:48,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666238153] [2022-11-02 20:59:48,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 790 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:49,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:49,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666238153] [2022-11-02 20:59:49,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666238153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:49,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220104538] [2022-11-02 20:59:49,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:59:49,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:49,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:49,977 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:49,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:59:54,799 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-02 20:59:54,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:54,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 20:59:54,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 790 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:55,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 790 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:55,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220104538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:55,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:55,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 27] total 58 [2022-11-02 20:59:55,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835570178] [2022-11-02 20:59:55,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:55,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-02 20:59:55,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:55,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-02 20:59:55,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=2731, Unknown=0, NotChecked=0, Total=3540 [2022-11-02 20:59:55,879 INFO L87 Difference]: Start difference. First operand 12254 states and 30624 transitions. Second operand has 60 states, 59 states have (on average 4.47457627118644) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:58,293 INFO L93 Difference]: Finished difference Result 26466 states and 63624 transitions. [2022-11-02 20:59:58,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-02 20:59:58,293 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 4.47457627118644) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 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 140 [2022-11-02 20:59:58,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:58,354 INFO L225 Difference]: With dead ends: 26466 [2022-11-02 20:59:58,355 INFO L226 Difference]: Without dead ends: 26466 [2022-11-02 20:59:58,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3275 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2641, Invalid=9569, Unknown=0, NotChecked=0, Total=12210 [2022-11-02 20:59:58,358 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1171 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:58,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 9 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:59:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26466 states. [2022-11-02 20:59:58,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26466 to 15586. [2022-11-02 20:59:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15586 states, 15584 states have (on average 2.4960215605749485) internal successors, (38898), 15585 states have internal predecessors, (38898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15586 states to 15586 states and 38898 transitions. [2022-11-02 20:59:58,884 INFO L78 Accepts]: Start accepts. Automaton has 15586 states and 38898 transitions. Word has length 140 [2022-11-02 20:59:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:58,885 INFO L495 AbstractCegarLoop]: Abstraction has 15586 states and 38898 transitions. [2022-11-02 20:59:58,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 4.47457627118644) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 15586 states and 38898 transitions. [2022-11-02 20:59:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 20:59:58,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:58,933 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:58,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:59,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:59,147 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:59,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash 96966668, now seen corresponding path program 7 times [2022-11-02 20:59:59,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:59,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049344070] [2022-11-02 20:59:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:59,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:00:00,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:00,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049344070] [2022-11-02 21:00:00,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049344070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:00,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734445023] [2022-11-02 21:00:00,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 21:00:00,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:00,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:00,900 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:00,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 21:00:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 21:00:01,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:00:01,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:00:02,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734445023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:02,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:02,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 21] total 48 [2022-11-02 21:00:02,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107375696] [2022-11-02 21:00:02,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:02,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 21:00:02,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:02,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 21:00:02,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=1956, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 21:00:02,091 INFO L87 Difference]: Start difference. First operand 15586 states and 38898 transitions. Second operand has 50 states, 49 states have (on average 4.8979591836734695) internal successors, (240), 49 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:03,820 INFO L93 Difference]: Finished difference Result 44724 states and 109799 transitions. [2022-11-02 21:00:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-02 21:00:03,821 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 4.8979591836734695) internal successors, (240), 49 states have internal predecessors, (240), 0 states have call successors, (0), 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 142 [2022-11-02 21:00:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:03,929 INFO L225 Difference]: With dead ends: 44724 [2022-11-02 21:00:03,929 INFO L226 Difference]: Without dead ends: 44724 [2022-11-02 21:00:03,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1959 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1413, Invalid=5559, Unknown=0, NotChecked=0, Total=6972 [2022-11-02 21:00:03,931 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 697 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:03,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 15 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:00:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44724 states. [2022-11-02 21:00:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44724 to 19040. [2022-11-02 21:00:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19040 states, 19038 states have (on average 2.5165983821830022) internal successors, (47911), 19039 states have internal predecessors, (47911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19040 states to 19040 states and 47911 transitions. [2022-11-02 21:00:04,590 INFO L78 Accepts]: Start accepts. Automaton has 19040 states and 47911 transitions. Word has length 142 [2022-11-02 21:00:04,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:04,590 INFO L495 AbstractCegarLoop]: Abstraction has 19040 states and 47911 transitions. [2022-11-02 21:00:04,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 4.8979591836734695) internal successors, (240), 49 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 19040 states and 47911 transitions. [2022-11-02 21:00:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-02 21:00:04,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:04,629 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:04,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:04,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-02 21:00:04,843 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:00:04,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:04,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1522934437, now seen corresponding path program 8 times [2022-11-02 21:00:04,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:04,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171250726] [2022-11-02 21:00:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:04,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:00:07,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:07,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171250726] [2022-11-02 21:00:07,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171250726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:07,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721234427] [2022-11-02 21:00:07,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:00:07,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:07,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:07,091 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:07,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 21:00:07,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:00:07,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:07,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 21:00:07,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:00:07,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:00:08,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721234427] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:08,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:08,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30, 30] total 65 [2022-11-02 21:00:08,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519720283] [2022-11-02 21:00:08,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:08,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-02 21:00:08,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:08,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-02 21:00:08,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=979, Invalid=3443, Unknown=0, NotChecked=0, Total=4422 [2022-11-02 21:00:08,758 INFO L87 Difference]: Start difference. First operand 19040 states and 47911 transitions. Second operand has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:11,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:11,378 INFO L93 Difference]: Finished difference Result 51578 states and 126074 transitions. [2022-11-02 21:00:11,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-02 21:00:11,379 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 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 165 [2022-11-02 21:00:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:11,505 INFO L225 Difference]: With dead ends: 51578 [2022-11-02 21:00:11,505 INFO L226 Difference]: Without dead ends: 51578 [2022-11-02 21:00:11,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3507 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2888, Invalid=10222, Unknown=0, NotChecked=0, Total=13110 [2022-11-02 21:00:11,507 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1243 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:11,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 10 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:00:11,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51578 states. [2022-11-02 21:00:12,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51578 to 21700. [2022-11-02 21:00:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21700 states, 21698 states have (on average 2.528389713337635) internal successors, (54861), 21699 states have internal predecessors, (54861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:12,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21700 states to 21700 states and 54861 transitions. [2022-11-02 21:00:12,274 INFO L78 Accepts]: Start accepts. Automaton has 21700 states and 54861 transitions. Word has length 165 [2022-11-02 21:00:12,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:12,275 INFO L495 AbstractCegarLoop]: Abstraction has 21700 states and 54861 transitions. [2022-11-02 21:00:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 21700 states and 54861 transitions. [2022-11-02 21:00:12,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-02 21:00:12,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:12,302 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:12,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:12,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:12,520 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:00:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2127975251, now seen corresponding path program 9 times [2022-11-02 21:00:12,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:12,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829626636] [2022-11-02 21:00:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:12,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1047 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:00:14,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:14,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829626636] [2022-11-02 21:00:14,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829626636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:14,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013036169] [2022-11-02 21:00:14,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:00:14,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:14,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:14,793 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:14,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 21:00:20,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-11-02 21:00:20,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:20,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 21:00:20,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:00:20,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:00:21,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013036169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:21,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:21,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 30, 30] total 65 [2022-11-02 21:00:21,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913778547] [2022-11-02 21:00:21,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:21,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-02 21:00:21,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-02 21:00:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=972, Invalid=3450, Unknown=0, NotChecked=0, Total=4422 [2022-11-02 21:00:21,850 INFO L87 Difference]: Start difference. First operand 21700 states and 54861 transitions. Second operand has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:24,972 INFO L93 Difference]: Finished difference Result 65738 states and 161304 transitions. [2022-11-02 21:00:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-02 21:00:24,973 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 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 165 [2022-11-02 21:00:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:25,124 INFO L225 Difference]: With dead ends: 65738 [2022-11-02 21:00:25,124 INFO L226 Difference]: Without dead ends: 65738 [2022-11-02 21:00:25,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4014 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3098, Invalid=11664, Unknown=0, NotChecked=0, Total=14762 [2022-11-02 21:00:25,126 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1508 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:25,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 8 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:00:25,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65738 states. [2022-11-02 21:00:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65738 to 34900. [2022-11-02 21:00:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34900 states, 34898 states have (on average 2.5583414522322196) internal successors, (89281), 34899 states have internal predecessors, (89281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34900 states to 34900 states and 89281 transitions. [2022-11-02 21:00:26,283 INFO L78 Accepts]: Start accepts. Automaton has 34900 states and 89281 transitions. Word has length 165 [2022-11-02 21:00:26,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:26,284 INFO L495 AbstractCegarLoop]: Abstraction has 34900 states and 89281 transitions. [2022-11-02 21:00:26,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 34900 states and 89281 transitions. [2022-11-02 21:00:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-02 21:00:26,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:26,388 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:26,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:26,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-02 21:00:26,603 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:00:26,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:26,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1975724488, now seen corresponding path program 10 times [2022-11-02 21:00:26,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:26,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715500798] [2022-11-02 21:00:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:26,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:00:28,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:28,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715500798] [2022-11-02 21:00:28,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715500798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:28,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669132135] [2022-11-02 21:00:28,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:00:28,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:28,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:28,822 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:28,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 21:00:29,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:00:29,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:29,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 21:00:29,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:00:29,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:00:30,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669132135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:30,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:30,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 26, 26] total 59 [2022-11-02 21:00:30,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926106348] [2022-11-02 21:00:30,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:30,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-02 21:00:30,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:30,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-02 21:00:30,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=722, Invalid=2938, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 21:00:30,390 INFO L87 Difference]: Start difference. First operand 34900 states and 89281 transitions. Second operand has 61 states, 60 states have (on average 4.866666666666666) internal successors, (292), 60 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:32,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:32,997 INFO L93 Difference]: Finished difference Result 104428 states and 262749 transitions. [2022-11-02 21:00:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-02 21:00:32,998 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 4.866666666666666) internal successors, (292), 60 states have internal predecessors, (292), 0 states have call successors, (0), 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 175 [2022-11-02 21:00:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:33,427 INFO L225 Difference]: With dead ends: 104428 [2022-11-02 21:00:33,427 INFO L226 Difference]: Without dead ends: 104428 [2022-11-02 21:00:33,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3099 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2111, Invalid=8601, Unknown=0, NotChecked=0, Total=10712 [2022-11-02 21:00:33,429 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1029 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:33,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 10 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:00:33,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104428 states. [2022-11-02 21:00:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104428 to 54332. [2022-11-02 21:00:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54332 states, 54330 states have (on average 2.563942573163998) internal successors, (139299), 54331 states have internal predecessors, (139299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54332 states to 54332 states and 139299 transitions. [2022-11-02 21:00:35,211 INFO L78 Accepts]: Start accepts. Automaton has 54332 states and 139299 transitions. Word has length 175 [2022-11-02 21:00:35,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:35,212 INFO L495 AbstractCegarLoop]: Abstraction has 54332 states and 139299 transitions. [2022-11-02 21:00:35,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 4.866666666666666) internal successors, (292), 60 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand 54332 states and 139299 transitions. [2022-11-02 21:00:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-02 21:00:35,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:35,318 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:35,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:35,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-02 21:00:35,519 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:00:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash -970921086, now seen corresponding path program 11 times [2022-11-02 21:00:35,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:35,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129891008] [2022-11-02 21:00:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:35,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 1464 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:00:38,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:38,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129891008] [2022-11-02 21:00:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129891008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618331517] [2022-11-02 21:00:38,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:00:38,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:38,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:38,074 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:38,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-02 21:00:43,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-11-02 21:00:43,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:43,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 21:00:43,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 1464 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:00:44,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 1464 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:00:45,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618331517] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:45,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:45,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 36, 36] total 77 [2022-11-02 21:00:45,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196589064] [2022-11-02 21:00:45,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:45,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-11-02 21:00:45,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-11-02 21:00:45,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1362, Invalid=4800, Unknown=0, NotChecked=0, Total=6162 [2022-11-02 21:00:45,607 INFO L87 Difference]: Start difference. First operand 54332 states and 139299 transitions. Second operand has 79 states, 78 states have (on average 4.461538461538462) internal successors, (348), 78 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:49,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:49,842 INFO L93 Difference]: Finished difference Result 173234 states and 433964 transitions. [2022-11-02 21:00:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-02 21:00:49,843 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 4.461538461538462) internal successors, (348), 78 states have internal predecessors, (348), 0 states have call successors, (0), 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 189 [2022-11-02 21:00:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:50,615 INFO L225 Difference]: With dead ends: 173234 [2022-11-02 21:00:50,615 INFO L226 Difference]: Without dead ends: 173234 [2022-11-02 21:00:50,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5767 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4446, Invalid=16434, Unknown=0, NotChecked=0, Total=20880 [2022-11-02 21:00:50,618 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1485 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:50,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 13 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 21:00:50,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173234 states. [2022-11-02 21:00:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173234 to 90962. [2022-11-02 21:00:53,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90962 states, 90960 states have (on average 2.5772427440633243) internal successors, (234426), 90961 states have internal predecessors, (234426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90962 states to 90962 states and 234426 transitions. [2022-11-02 21:00:53,679 INFO L78 Accepts]: Start accepts. Automaton has 90962 states and 234426 transitions. Word has length 189 [2022-11-02 21:00:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:53,680 INFO L495 AbstractCegarLoop]: Abstraction has 90962 states and 234426 transitions. [2022-11-02 21:00:53,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 4.461538461538462) internal successors, (348), 78 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 90962 states and 234426 transitions. [2022-11-02 21:00:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-02 21:00:53,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:53,816 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:53,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:54,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:54,017 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:00:54,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:54,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2060414189, now seen corresponding path program 12 times [2022-11-02 21:00:54,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:54,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746015960] [2022-11-02 21:00:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:54,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 0 proven. 1621 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:00:56,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:56,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746015960] [2022-11-02 21:00:56,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746015960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:56,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703772717] [2022-11-02 21:00:56,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:00:56,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:56,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:56,508 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:56,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-02 21:01:29,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-11-02 21:01:29,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:29,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 21:01:29,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 0 proven. 1621 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:01:29,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 0 proven. 1621 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:01:31,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703772717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:31,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:01:31,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 38] total 81 [2022-11-02 21:01:31,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573313291] [2022-11-02 21:01:31,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:31,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-02 21:01:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:31,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-02 21:01:31,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1523, Invalid=5283, Unknown=0, NotChecked=0, Total=6806 [2022-11-02 21:01:31,261 INFO L87 Difference]: Start difference. First operand 90962 states and 234426 transitions. Second operand has 83 states, 82 states have (on average 4.439024390243903) internal successors, (364), 82 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:36,380 INFO L93 Difference]: Finished difference Result 246660 states and 621039 transitions. [2022-11-02 21:01:36,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-11-02 21:01:36,380 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 4.439024390243903) internal successors, (364), 82 states have internal predecessors, (364), 0 states have call successors, (0), 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 197 [2022-11-02 21:01:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:37,081 INFO L225 Difference]: With dead ends: 246660 [2022-11-02 21:01:37,081 INFO L226 Difference]: Without dead ends: 246660 [2022-11-02 21:01:37,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6413 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4946, Invalid=18310, Unknown=0, NotChecked=0, Total=23256 [2022-11-02 21:01:37,083 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1663 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:37,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 13 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 21:01:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246660 states. [2022-11-02 21:01:41,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246660 to 147880. [2022-11-02 21:01:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147880 states, 147878 states have (on average 2.5870717753824097) internal successors, (382571), 147879 states have internal predecessors, (382571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147880 states to 147880 states and 382571 transitions. [2022-11-02 21:01:42,400 INFO L78 Accepts]: Start accepts. Automaton has 147880 states and 382571 transitions. Word has length 197 [2022-11-02 21:01:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:42,401 INFO L495 AbstractCegarLoop]: Abstraction has 147880 states and 382571 transitions. [2022-11-02 21:01:42,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 4.439024390243903) internal successors, (364), 82 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:42,402 INFO L276 IsEmpty]: Start isEmpty. Operand 147880 states and 382571 transitions. [2022-11-02 21:01:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-02 21:01:42,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:42,671 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:42,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:42,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-02 21:01:42,879 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:01:42,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:42,880 INFO L85 PathProgramCache]: Analyzing trace with hash -537398836, now seen corresponding path program 13 times [2022-11-02 21:01:42,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:42,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340875495] [2022-11-02 21:01:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:42,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1402 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:01:45,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:45,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340875495] [2022-11-02 21:01:45,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340875495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:45,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15537395] [2022-11-02 21:01:45,379 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 21:01:45,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:45,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:45,380 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:45,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-02 21:01:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 21:01:45,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1396 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 21:01:46,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1396 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 21:01:47,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15537395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:47,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:01:47,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 31, 31] total 70 [2022-11-02 21:01:47,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559051478] [2022-11-02 21:01:47,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:47,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-02 21:01:47,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-02 21:01:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1002, Invalid=4110, Unknown=0, NotChecked=0, Total=5112 [2022-11-02 21:01:47,187 INFO L87 Difference]: Start difference. First operand 147880 states and 382571 transitions. Second operand has 72 states, 71 states have (on average 4.845070422535211) internal successors, (344), 71 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:51,835 INFO L93 Difference]: Finished difference Result 395570 states and 1005578 transitions. [2022-11-02 21:01:51,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-02 21:01:51,840 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 4.845070422535211) internal successors, (344), 71 states have internal predecessors, (344), 0 states have call successors, (0), 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 208 [2022-11-02 21:01:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:53,647 INFO L225 Difference]: With dead ends: 395570 [2022-11-02 21:01:53,647 INFO L226 Difference]: Without dead ends: 395570 [2022-11-02 21:01:53,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4172 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2858, Invalid=11662, Unknown=0, NotChecked=0, Total=14520 [2022-11-02 21:01:53,649 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1454 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:53,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 15 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:01:54,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395570 states. [2022-11-02 21:02:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395570 to 206660. [2022-11-02 21:02:00,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206660 states, 206658 states have (on average 2.5821647359405393) internal successors, (533625), 206659 states have internal predecessors, (533625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206660 states to 206660 states and 533625 transitions. [2022-11-02 21:02:01,742 INFO L78 Accepts]: Start accepts. Automaton has 206660 states and 533625 transitions. Word has length 208 [2022-11-02 21:02:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:01,743 INFO L495 AbstractCegarLoop]: Abstraction has 206660 states and 533625 transitions. [2022-11-02 21:02:01,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 4.845070422535211) internal successors, (344), 71 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 206660 states and 533625 transitions. [2022-11-02 21:02:02,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-02 21:02:02,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:02,123 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:02,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-11-02 21:02:02,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-02 21:02:02,324 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:02:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:02,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1330115995, now seen corresponding path program 14 times [2022-11-02 21:02:02,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:02,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886226061] [2022-11-02 21:02:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:02,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 2329 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:02:05,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:05,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886226061] [2022-11-02 21:02:05,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886226061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:02:05,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288784303] [2022-11-02 21:02:05,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:02:05,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:05,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:05,988 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:02:06,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7298cd11-3f39-4327-b05e-92f32a7aab97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-02 21:02:06,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:02:06,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:02:06,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-02 21:02:06,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 2329 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:02:06,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 2329 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:02:08,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288784303] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:08,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:02:08,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 46, 46] total 97 [2022-11-02 21:02:08,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956764887] [2022-11-02 21:02:08,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:08,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-11-02 21:02:08,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:08,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-11-02 21:02:08,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2214, Invalid=7488, Unknown=0, NotChecked=0, Total=9702 [2022-11-02 21:02:08,766 INFO L87 Difference]: Start difference. First operand 206660 states and 533625 transitions. Second operand has 99 states, 98 states have (on average 4.36734693877551) internal successors, (428), 98 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:17,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:17,265 INFO L93 Difference]: Finished difference Result 508736 states and 1282875 transitions. [2022-11-02 21:02:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-11-02 21:02:17,266 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 4.36734693877551) internal successors, (428), 98 states have internal predecessors, (428), 0 states have call successors, (0), 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 229 [2022-11-02 21:02:17,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:18,926 INFO L225 Difference]: With dead ends: 508736 [2022-11-02 21:02:18,926 INFO L226 Difference]: Without dead ends: 508736 [2022-11-02 21:02:18,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8445 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6944, Invalid=24562, Unknown=0, NotChecked=0, Total=31506 [2022-11-02 21:02:18,928 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2462 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:18,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 11 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 21:02:20,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508736 states.