./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/airline-20.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_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/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_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/airline-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/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_f8f1cf79-0df4-4308-a117-1272ee5e92e5/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 012c46975e61d3a8df350de2a682cb9d47f59406509497c2ea72a562542ce55a --- 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 20:41:26,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:41:26,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:41:26,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:41:26,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:41:26,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:41:26,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:41:26,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:41:26,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:41:26,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:41:26,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:41:26,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:41:26,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:41:26,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:41:26,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:41:26,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:41:26,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:41:26,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:41:26,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:41:26,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:41:26,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:41:26,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:41:26,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:41:26,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:41:26,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:41:26,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:41:26,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:41:26,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:41:26,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:41:26,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:41:26,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:41:26,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:41:26,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:41:26,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:41:26,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:41:26,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:41:26,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:41:26,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:41:26,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:41:26,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:41:26,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:41:26,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:41:26,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:41:26,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:41:26,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:41:26,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:41:26,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:41:26,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:41:26,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:41:26,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:41:26,769 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:41:26,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:41:26,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:41:26,771 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:41:26,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:41:26,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:41:26,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:41:26,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:41:26,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:41:26,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:41:26,773 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:41:26,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:41:26,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:41:26,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:41:26,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:41:26,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:41:26,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:41:26,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:41:26,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:26,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:41:26,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:41:26,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:41:26,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:41:26,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:41:26,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:41:26,778 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_f8f1cf79-0df4-4308-a117-1272ee5e92e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 012c46975e61d3a8df350de2a682cb9d47f59406509497c2ea72a562542ce55a [2022-11-02 20:41:27,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:41:27,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:41:27,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:41:27,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:41:27,106 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:41:27,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-deagle/airline-20.i [2022-11-02 20:41:27,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/data/b82dd92f6/77481fac3ca94c6681f149892bb02e29/FLAG88c084011 [2022-11-02 20:41:27,814 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:41:27,815 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/sv-benchmarks/c/pthread-deagle/airline-20.i [2022-11-02 20:41:27,833 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/data/b82dd92f6/77481fac3ca94c6681f149892bb02e29/FLAG88c084011 [2022-11-02 20:41:28,158 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/data/b82dd92f6/77481fac3ca94c6681f149892bb02e29 [2022-11-02 20:41:28,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:41:28,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:41:28,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:28,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:41:28,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:41:28,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b694cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28, skipping insertion in model container [2022-11-02 20:41:28,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:41:28,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:41:28,593 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_f8f1cf79-0df4-4308-a117-1272ee5e92e5/sv-benchmarks/c/pthread-deagle/airline-20.i[32101,32114] [2022-11-02 20:41:28,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:28,602 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:41:28,670 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_f8f1cf79-0df4-4308-a117-1272ee5e92e5/sv-benchmarks/c/pthread-deagle/airline-20.i[32101,32114] [2022-11-02 20:41:28,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:28,703 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:41:28,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28 WrapperNode [2022-11-02 20:41:28,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:28,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:28,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:41:28,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:41:28,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,743 INFO L138 Inliner]: procedures = 162, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2022-11-02 20:41:28,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:28,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:41:28,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:41:28,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:41:28,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,768 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:41:28,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:41:28,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:41:28,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:41:28,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:28,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:28,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:41:28,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:41:28,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:41:28,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:41:28,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:41:28,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:41:28,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:41:28,853 INFO L130 BoogieDeclarations]: Found specification of procedure salethread [2022-11-02 20:41:28,853 INFO L138 BoogieDeclarations]: Found implementation of procedure salethread [2022-11-02 20:41:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:41:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:41:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:41:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:41:28,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:41:28,856 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 20:41:28,996 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:41:28,998 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:41:29,279 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:41:29,318 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:41:29,319 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:41:29,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:29 BoogieIcfgContainer [2022-11-02 20:41:29,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:41:29,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:41:29,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:41:29,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:41:29,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:41:28" (1/3) ... [2022-11-02 20:41:29,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f2c5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:29, skipping insertion in model container [2022-11-02 20:41:29,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (2/3) ... [2022-11-02 20:41:29,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f2c5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:29, skipping insertion in model container [2022-11-02 20:41:29,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:29" (3/3) ... [2022-11-02 20:41:29,330 INFO L112 eAbstractionObserver]: Analyzing ICFG airline-20.i [2022-11-02 20:41:29,339 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:41:29,349 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:41:29,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-02 20:41:29,350 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:41:29,426 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:41:29,464 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:41:29,480 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 164 flow [2022-11-02 20:41:29,483 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 78 transitions, 164 flow [2022-11-02 20:41:29,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 164 flow [2022-11-02 20:41:29,567 INFO L130 PetriNetUnfolder]: 9/100 cut-off events. [2022-11-02 20:41:29,567 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:41:29,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 100 events. 9/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2022-11-02 20:41:29,576 INFO L118 LiptonReduction]: Number of co-enabled transitions 768 [2022-11-02 20:41:32,376 INFO L133 LiptonReduction]: Checked pairs total: 913 [2022-11-02 20:41:32,376 INFO L135 LiptonReduction]: Total number of compositions: 85 [2022-11-02 20:41:32,385 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 17 transitions, 42 flow [2022-11-02 20:41:32,399 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 43 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 20:41:32,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:32,422 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;@61e83e88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:32,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-02 20:41:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 43 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 20:41:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:41:32,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:32,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:41:32,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-02 20:41:32,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash 9847271, now seen corresponding path program 1 times [2022-11-02 20:41:32,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:32,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198895100] [2022-11-02 20:41:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:32,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:32,605 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 20:41:32,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:32,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198895100] [2022-11-02 20:41:32,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198895100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:32,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:32,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:32,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616032889] [2022-11-02 20:41:32,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:32,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:41:32,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:32,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:41:32,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:41:32,637 INFO L87 Difference]: Start difference. First operand has 44 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 43 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) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:32,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:32,682 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2022-11-02 20:41:32,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:41:32,684 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:41:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:32,692 INFO L225 Difference]: With dead ends: 35 [2022-11-02 20:41:32,692 INFO L226 Difference]: Without dead ends: 32 [2022-11-02 20:41:32,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:41:32,696 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:32,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-02 20:41:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-02 20:41:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 2.090909090909091) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2022-11-02 20:41:32,729 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 4 [2022-11-02 20:41:32,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:32,730 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2022-11-02 20:41:32,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:32,730 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2022-11-02 20:41:32,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:41:32,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:32,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:41:32,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:41:32,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-02 20:41:32,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash 9847273, now seen corresponding path program 1 times [2022-11-02 20:41:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:32,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535879532] [2022-11-02 20:41:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:32,836 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 20:41:32,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:32,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535879532] [2022-11-02 20:41:32,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535879532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:32,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:32,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922122948] [2022-11-02 20:41:32,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:32,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:32,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:32,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:32,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:32,854 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:32,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:32,876 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-11-02 20:41:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:32,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:41:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:32,878 INFO L225 Difference]: With dead ends: 23 [2022-11-02 20:41:32,878 INFO L226 Difference]: Without dead ends: 22 [2022-11-02 20:41:32,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:32,882 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:32,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-02 20:41:32,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-02 20:41:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-11-02 20:41:32,891 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 4 [2022-11-02 20:41:32,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:32,891 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-11-02 20:41:32,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-11-02 20:41:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:41:32,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:32,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:41:32,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:41:32,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-02 20:41:32,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash 9847274, now seen corresponding path program 1 times [2022-11-02 20:41:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:32,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113257970] [2022-11-02 20:41:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:32,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:32,996 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 20:41:32,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:32,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113257970] [2022-11-02 20:41:32,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113257970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:32,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:32,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426958656] [2022-11-02 20:41:32,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:32,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:33,000 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:33,016 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2022-11-02 20:41:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:41:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:33,017 INFO L225 Difference]: With dead ends: 20 [2022-11-02 20:41:33,017 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 20:41:33,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:33,019 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:33,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 20:41:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-02 20:41:33,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.5625) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-11-02 20:41:33,024 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 4 [2022-11-02 20:41:33,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:33,024 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-11-02 20:41:33,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:33,025 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-11-02 20:41:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:41:33,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:33,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:41:33,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:41:33,026 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-02 20:41:33,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:33,026 INFO L85 PathProgramCache]: Analyzing trace with hash 9847275, now seen corresponding path program 1 times [2022-11-02 20:41:33,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:33,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897578353] [2022-11-02 20:41:33,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:33,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:33,102 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 20:41:33,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:33,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897578353] [2022-11-02 20:41:33,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897578353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:33,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:33,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:33,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984077103] [2022-11-02 20:41:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:33,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:33,105 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:33,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:33,127 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2022-11-02 20:41:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:33,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:41:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:33,129 INFO L225 Difference]: With dead ends: 18 [2022-11-02 20:41:33,129 INFO L226 Difference]: Without dead ends: 18 [2022-11-02 20:41:33,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:33,130 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:33,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:33,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-02 20:41:33,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-02 20:41:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-02 20:41:33,134 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 4 [2022-11-02 20:41:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:33,135 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-02 20:41:33,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:33,135 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-02 20:41:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:41:33,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:33,136 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-02 20:41:33,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:41:33,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-02 20:41:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash 873310651, now seen corresponding path program 1 times [2022-11-02 20:41:33,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:33,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512568137] [2022-11-02 20:41:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:33,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:33,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:33,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:33,188 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:41:33,189 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-02 20:41:33,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-11-02 20:41:33,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-11-02 20:41:33,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-11-02 20:41:33,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2022-11-02 20:41:33,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-11-02 20:41:33,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-11-02 20:41:33,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-11-02 20:41:33,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-11-02 20:41:33,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:41:33,203 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:41:33,204 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:41:33,206 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:41:33,223 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:41:33,230 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:41:33,232 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 92 transitions, 202 flow [2022-11-02 20:41:33,233 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 92 transitions, 202 flow [2022-11-02 20:41:33,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 92 transitions, 202 flow [2022-11-02 20:41:33,299 INFO L130 PetriNetUnfolder]: 18/178 cut-off events. [2022-11-02 20:41:33,302 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:41:33,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 178 events. 18/178 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 350 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2022-11-02 20:41:33,309 INFO L118 LiptonReduction]: Number of co-enabled transitions 2280 [2022-11-02 20:41:35,948 INFO L133 LiptonReduction]: Checked pairs total: 4901 [2022-11-02 20:41:35,949 INFO L135 LiptonReduction]: Total number of compositions: 94 [2022-11-02 20:41:35,950 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 32 transitions, 82 flow [2022-11-02 20:41:35,985 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 556 states, 485 states have (on average 3.2082474226804125) internal successors, (1556), 555 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:35,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:35,987 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;@61e83e88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:35,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-02 20:41:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 556 states, 485 states have (on average 3.2082474226804125) internal successors, (1556), 555 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:41:35,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:35,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:41:35,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-02 20:41:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash 15993160, now seen corresponding path program 1 times [2022-11-02 20:41:35,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:35,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140629122] [2022-11-02 20:41:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:35,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:36,041 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 20:41:36,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:36,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140629122] [2022-11-02 20:41:36,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140629122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:36,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:36,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:36,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849824068] [2022-11-02 20:41:36,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:36,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:36,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:36,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:36,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:36,046 INFO L87 Difference]: Start difference. First operand has 556 states, 485 states have (on average 3.2082474226804125) internal successors, (1556), 555 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:36,129 INFO L93 Difference]: Finished difference Result 438 states and 1024 transitions. [2022-11-02 20:41:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:36,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:41:36,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:36,140 INFO L225 Difference]: With dead ends: 438 [2022-11-02 20:41:36,145 INFO L226 Difference]: Without dead ends: 402 [2022-11-02 20:41:36,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:36,146 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:36,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:36,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-02 20:41:36,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 330. [2022-11-02 20:41:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 303 states have (on average 2.7095709570957096) internal successors, (821), 329 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 821 transitions. [2022-11-02 20:41:36,204 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 821 transitions. Word has length 4 [2022-11-02 20:41:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:36,204 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 821 transitions. [2022-11-02 20:41:36,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,205 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 821 transitions. [2022-11-02 20:41:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:41:36,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:36,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:41:36,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:41:36,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-02 20:41:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:36,207 INFO L85 PathProgramCache]: Analyzing trace with hash 495784488, now seen corresponding path program 1 times [2022-11-02 20:41:36,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:36,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132041570] [2022-11-02 20:41:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:36,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:36,241 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 20:41:36,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:36,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132041570] [2022-11-02 20:41:36,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132041570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:36,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:36,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:36,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071319592] [2022-11-02 20:41:36,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:36,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:36,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:36,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:36,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:36,244 INFO L87 Difference]: Start difference. First operand 330 states and 821 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:36,314 INFO L93 Difference]: Finished difference Result 326 states and 812 transitions. [2022-11-02 20:41:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:36,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:41:36,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:36,318 INFO L225 Difference]: With dead ends: 326 [2022-11-02 20:41:36,321 INFO L226 Difference]: Without dead ends: 326 [2022-11-02 20:41:36,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:36,323 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:36,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 11 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-02 20:41:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2022-11-02 20:41:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 300 states have (on average 2.7066666666666666) internal successors, (812), 325 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 812 transitions. [2022-11-02 20:41:36,353 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 812 transitions. Word has length 5 [2022-11-02 20:41:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:36,354 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 812 transitions. [2022-11-02 20:41:36,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 812 transitions. [2022-11-02 20:41:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:41:36,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:36,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:41:36,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:41:36,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-02 20:41:36,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:36,356 INFO L85 PathProgramCache]: Analyzing trace with hash 495784490, now seen corresponding path program 1 times [2022-11-02 20:41:36,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:36,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860729372] [2022-11-02 20:41:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:36,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:36,429 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 20:41:36,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:36,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860729372] [2022-11-02 20:41:36,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860729372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:36,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:36,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:36,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877472593] [2022-11-02 20:41:36,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:36,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:36,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:36,432 INFO L87 Difference]: Start difference. First operand 326 states and 812 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:36,462 INFO L93 Difference]: Finished difference Result 300 states and 740 transitions. [2022-11-02 20:41:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:36,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:41:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:36,465 INFO L225 Difference]: With dead ends: 300 [2022-11-02 20:41:36,465 INFO L226 Difference]: Without dead ends: 300 [2022-11-02 20:41:36,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:36,466 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:36,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:36,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-02 20:41:36,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-11-02 20:41:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 278 states have (on average 2.661870503597122) internal successors, (740), 299 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 740 transitions. [2022-11-02 20:41:36,518 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 740 transitions. Word has length 5 [2022-11-02 20:41:36,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:36,519 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 740 transitions. [2022-11-02 20:41:36,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 740 transitions. [2022-11-02 20:41:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:41:36,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:36,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:41:36,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:41:36,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-02 20:41:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1865237221, now seen corresponding path program 1 times [2022-11-02 20:41:36,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:36,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231742906] [2022-11-02 20:41:36,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:36,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:36,577 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 20:41:36,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:36,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231742906] [2022-11-02 20:41:36,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231742906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:36,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:36,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:41:36,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868268017] [2022-11-02 20:41:36,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:36,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:36,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:36,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:36,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:36,582 INFO L87 Difference]: Start difference. First operand 300 states and 740 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 20:41:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:36,637 INFO L93 Difference]: Finished difference Result 278 states and 677 transitions. [2022-11-02 20:41:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:36,637 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 20:41:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:36,640 INFO L225 Difference]: With dead ends: 278 [2022-11-02 20:41:36,640 INFO L226 Difference]: Without dead ends: 278 [2022-11-02 20:41:36,641 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 20:41:36,643 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:36,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-02 20:41:36,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-11-02 20:41:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 259 states have (on average 2.613899613899614) internal successors, (677), 277 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 677 transitions. [2022-11-02 20:41:36,657 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 677 transitions. Word has length 9 [2022-11-02 20:41:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:36,657 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 677 transitions. [2022-11-02 20:41:36,657 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 20:41:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 677 transitions. [2022-11-02 20:41:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:41:36,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:36,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:36,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:41:36,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-02 20:41:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1793676053, now seen corresponding path program 1 times [2022-11-02 20:41:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:36,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651499152] [2022-11-02 20:41:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:36,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:36,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:36,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651499152] [2022-11-02 20:41:36,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651499152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:36,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:36,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:41:36,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596005961] [2022-11-02 20:41:36,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:36,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:36,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:36,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:36,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:36,728 INFO L87 Difference]: Start difference. First operand 278 states and 677 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 20:41:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:36,774 INFO L93 Difference]: Finished difference Result 299 states and 626 transitions. [2022-11-02 20:41:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:36,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 20:41:36,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:36,776 INFO L225 Difference]: With dead ends: 299 [2022-11-02 20:41:36,776 INFO L226 Difference]: Without dead ends: 299 [2022-11-02 20:41:36,777 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 20:41:36,777 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:36,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-02 20:41:36,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 237. [2022-11-02 20:41:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 218 states have (on average 2.3623853211009176) internal successors, (515), 236 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 515 transitions. [2022-11-02 20:41:36,787 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 515 transitions. Word has length 11 [2022-11-02 20:41:36,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:36,787 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 515 transitions. [2022-11-02 20:41:36,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 20:41:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 515 transitions. [2022-11-02 20:41:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:41:36,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:36,788 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:36,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:41:36,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-02 20:41:36,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash 363443506, now seen corresponding path program 1 times [2022-11-02 20:41:36,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:36,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622278102] [2022-11-02 20:41:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:36,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:36,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622278102] [2022-11-02 20:41:36,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622278102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:36,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425188557] [2022-11-02 20:41:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:36,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:36,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:36,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:36,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:41:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:37,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:41:37,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:37,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:37,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425188557] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:37,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:41:37,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2022-11-02 20:41:37,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687173098] [2022-11-02 20:41:37,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:37,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:41:37,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:41:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:41:37,220 INFO L87 Difference]: Start difference. First operand 237 states and 515 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:37,253 INFO L93 Difference]: Finished difference Result 207 states and 457 transitions. [2022-11-02 20:41:37,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:37,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:41:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:37,256 INFO L225 Difference]: With dead ends: 207 [2022-11-02 20:41:37,256 INFO L226 Difference]: Without dead ends: 198 [2022-11-02 20:41:37,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:41:37,257 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:37,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:37,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-02 20:41:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2022-11-02 20:41:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 189 states have (on average 2.322751322751323) internal successors, (439), 195 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 439 transitions. [2022-11-02 20:41:37,280 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 439 transitions. Word has length 11 [2022-11-02 20:41:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:37,281 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 439 transitions. [2022-11-02 20:41:37,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 439 transitions. [2022-11-02 20:41:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:41:37,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:37,282 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-02 20:41:37,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:37,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:41:37,506 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-02 20:41:37,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:37,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1491573479, now seen corresponding path program 1 times [2022-11-02 20:41:37,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:37,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492273624] [2022-11-02 20:41:37,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:37,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:37,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:37,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:37,545 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:41:37,545 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-02 20:41:37,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-02 20:41:37,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-02 20:41:37,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-02 20:41:37,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-02 20:41:37,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-02 20:41:37,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-02 20:41:37,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-02 20:41:37,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-02 20:41:37,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-02 20:41:37,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-02 20:41:37,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:41:37,547 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:37,547 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:41:37,548 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:41:37,584 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:41:37,586 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:41:37,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 106 transitions, 242 flow [2022-11-02 20:41:37,587 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 106 transitions, 242 flow [2022-11-02 20:41:37,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 106 transitions, 242 flow [2022-11-02 20:41:37,659 INFO L130 PetriNetUnfolder]: 34/307 cut-off events. [2022-11-02 20:41:37,659 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 20:41:37,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 307 events. 34/307 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 800 event pairs, 1 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2022-11-02 20:41:37,669 INFO L118 LiptonReduction]: Number of co-enabled transitions 3960 [2022-11-02 20:41:40,432 INFO L133 LiptonReduction]: Checked pairs total: 11627 [2022-11-02 20:41:40,433 INFO L135 LiptonReduction]: Total number of compositions: 103 [2022-11-02 20:41:40,434 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 44 transitions, 118 flow [2022-11-02 20:41:40,642 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4951 states, 4682 states have (on average 4.205040580948313) internal successors, (19688), 4950 states have internal predecessors, (19688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:40,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:40,644 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;@61e83e88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:40,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-02 20:41:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 4951 states, 4682 states have (on average 4.205040580948313) internal successors, (19688), 4950 states have internal predecessors, (19688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:40,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:41:40,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:40,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:41:40,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:41:40,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:40,679 INFO L85 PathProgramCache]: Analyzing trace with hash 22868224, now seen corresponding path program 1 times [2022-11-02 20:41:40,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:40,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011846979] [2022-11-02 20:41:40,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:40,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:40,719 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 20:41:40,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:40,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011846979] [2022-11-02 20:41:40,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011846979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:40,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:40,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243340380] [2022-11-02 20:41:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:40,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:40,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:40,735 INFO L87 Difference]: Start difference. First operand has 4951 states, 4682 states have (on average 4.205040580948313) internal successors, (19688), 4950 states have internal predecessors, (19688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:40,926 INFO L93 Difference]: Finished difference Result 3582 states and 12618 transitions. [2022-11-02 20:41:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:40,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:41:40,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:40,954 INFO L225 Difference]: With dead ends: 3582 [2022-11-02 20:41:40,954 INFO L226 Difference]: Without dead ends: 3361 [2022-11-02 20:41:40,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:40,956 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:40,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 6 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2022-11-02 20:41:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 2886. [2022-11-02 20:41:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2795 states have (on average 3.741323792486583) internal successors, (10457), 2885 states have internal predecessors, (10457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 10457 transitions. [2022-11-02 20:41:41,085 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 10457 transitions. Word has length 4 [2022-11-02 20:41:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:41,085 INFO L495 AbstractCegarLoop]: Abstraction has 2886 states and 10457 transitions. [2022-11-02 20:41:41,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 10457 transitions. [2022-11-02 20:41:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:41:41,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:41,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:41:41,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:41:41,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:41:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash 708910907, now seen corresponding path program 1 times [2022-11-02 20:41:41,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:41,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827469152] [2022-11-02 20:41:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:41,125 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 20:41:41,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:41,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827469152] [2022-11-02 20:41:41,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827469152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:41,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:41,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684382299] [2022-11-02 20:41:41,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:41,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:41,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:41,128 INFO L87 Difference]: Start difference. First operand 2886 states and 10457 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:41,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:41,215 INFO L93 Difference]: Finished difference Result 2876 states and 10433 transitions. [2022-11-02 20:41:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:41,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:41:41,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:41,236 INFO L225 Difference]: With dead ends: 2876 [2022-11-02 20:41:41,236 INFO L226 Difference]: Without dead ends: 2876 [2022-11-02 20:41:41,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:41,237 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:41,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2022-11-02 20:41:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2876. [2022-11-02 20:41:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2787 states have (on average 3.7434517402224614) internal successors, (10433), 2875 states have internal predecessors, (10433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 10433 transitions. [2022-11-02 20:41:41,405 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 10433 transitions. Word has length 5 [2022-11-02 20:41:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:41,406 INFO L495 AbstractCegarLoop]: Abstraction has 2876 states and 10433 transitions. [2022-11-02 20:41:41,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 10433 transitions. [2022-11-02 20:41:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:41:41,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:41,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:41:41,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:41:41,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:41:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash -595187352, now seen corresponding path program 1 times [2022-11-02 20:41:41,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:41,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147028827] [2022-11-02 20:41:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:41,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:41,459 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 20:41:41,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:41,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147028827] [2022-11-02 20:41:41,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147028827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:41,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:41,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:41:41,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493528033] [2022-11-02 20:41:41,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:41,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:41,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:41,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:41,464 INFO L87 Difference]: Start difference. First operand 2876 states and 10433 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 20:41:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:41,560 INFO L93 Difference]: Finished difference Result 2682 states and 9657 transitions. [2022-11-02 20:41:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:41,561 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 20:41:41,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:41,578 INFO L225 Difference]: With dead ends: 2682 [2022-11-02 20:41:41,579 INFO L226 Difference]: Without dead ends: 2682 [2022-11-02 20:41:41,579 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 20:41:41,581 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:41,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 8 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-11-02 20:41:41,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2682. [2022-11-02 20:41:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2603 states have (on average 3.709950057625816) internal successors, (9657), 2681 states have internal predecessors, (9657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 9657 transitions. [2022-11-02 20:41:41,734 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 9657 transitions. Word has length 9 [2022-11-02 20:41:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:41,735 INFO L495 AbstractCegarLoop]: Abstraction has 2682 states and 9657 transitions. [2022-11-02 20:41:41,735 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 20:41:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 9657 transitions. [2022-11-02 20:41:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:41:41,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:41,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:41:41,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:41:41,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:41:41,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash -595187351, now seen corresponding path program 1 times [2022-11-02 20:41:41,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:41,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522597209] [2022-11-02 20:41:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:41,793 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 20:41:41,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:41,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522597209] [2022-11-02 20:41:41,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522597209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:41,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656613290] [2022-11-02 20:41:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:41,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:41,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:41,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:41,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:41:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:41,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:41:41,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:41,904 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 20:41:41,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:41,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656613290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:41,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:41,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-02 20:41:41,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785914269] [2022-11-02 20:41:41,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:41,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:41:41,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:41,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:41:41,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:41,931 INFO L87 Difference]: Start difference. First operand 2682 states and 9657 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:42,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:42,017 INFO L93 Difference]: Finished difference Result 2488 states and 8881 transitions. [2022-11-02 20:41:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:41:42,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:41:42,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:42,046 INFO L225 Difference]: With dead ends: 2488 [2022-11-02 20:41:42,046 INFO L226 Difference]: Without dead ends: 2488 [2022-11-02 20:41:42,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:42,047 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:42,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 9 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2022-11-02 20:41:42,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2488. [2022-11-02 20:41:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2419 states have (on average 3.6713517982637454) internal successors, (8881), 2487 states have internal predecessors, (8881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 8881 transitions. [2022-11-02 20:41:42,169 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 8881 transitions. Word has length 9 [2022-11-02 20:41:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:42,170 INFO L495 AbstractCegarLoop]: Abstraction has 2488 states and 8881 transitions. [2022-11-02 20:41:42,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:42,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 8881 transitions. [2022-11-02 20:41:42,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:41:42,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:42,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:42,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:42,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:42,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:41:42,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1675798097, now seen corresponding path program 1 times [2022-11-02 20:41:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:42,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962620036] [2022-11-02 20:41:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:42,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:42,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:42,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962620036] [2022-11-02 20:41:42,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962620036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:42,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:42,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:41:42,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312683084] [2022-11-02 20:41:42,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:42,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:42,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:42,432 INFO L87 Difference]: Start difference. First operand 2488 states and 8881 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 20:41:42,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:42,528 INFO L93 Difference]: Finished difference Result 3161 states and 9612 transitions. [2022-11-02 20:41:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:42,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 20:41:42,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:42,545 INFO L225 Difference]: With dead ends: 3161 [2022-11-02 20:41:42,545 INFO L226 Difference]: Without dead ends: 3161 [2022-11-02 20:41:42,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:42,546 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:42,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 10 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2022-11-02 20:41:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2592. [2022-11-02 20:41:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2523 states have (on average 3.313912009512485) internal successors, (8361), 2591 states have internal predecessors, (8361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:42,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 8361 transitions. [2022-11-02 20:41:42,672 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 8361 transitions. Word has length 11 [2022-11-02 20:41:42,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:42,672 INFO L495 AbstractCegarLoop]: Abstraction has 2592 states and 8361 transitions. [2022-11-02 20:41:42,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 20:41:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 8361 transitions. [2022-11-02 20:41:42,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:41:42,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:42,673 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:42,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:41:42,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:41:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:42,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1448558075, now seen corresponding path program 1 times [2022-11-02 20:41:42,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:42,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619342538] [2022-11-02 20:41:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:42,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:42,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:42,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619342538] [2022-11-02 20:41:42,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619342538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:42,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942305869] [2022-11-02 20:41:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:42,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:42,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:42,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:42,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:41:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:41:42,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:42,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:42,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942305869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:42,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:42,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:41:42,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068897766] [2022-11-02 20:41:42,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:42,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:42,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:42,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:42,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:42,851 INFO L87 Difference]: Start difference. First operand 2592 states and 8361 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:43,108 INFO L93 Difference]: Finished difference Result 4152 states and 11661 transitions. [2022-11-02 20:41:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:41:43,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:41:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:43,125 INFO L225 Difference]: With dead ends: 4152 [2022-11-02 20:41:43,125 INFO L226 Difference]: Without dead ends: 4128 [2022-11-02 20:41:43,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 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 20:41:43,126 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 148 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:43,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 25 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:41:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2022-11-02 20:41:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 2527. [2022-11-02 20:41:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2464 states have (on average 3.2905844155844157) internal successors, (8108), 2526 states have internal predecessors, (8108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 8108 transitions. [2022-11-02 20:41:43,244 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 8108 transitions. Word has length 11 [2022-11-02 20:41:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:43,245 INFO L495 AbstractCegarLoop]: Abstraction has 2527 states and 8108 transitions. [2022-11-02 20:41:43,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 8108 transitions. [2022-11-02 20:41:43,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:41:43,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:43,246 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:43,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:43,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:41:43,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:41:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:43,467 INFO L85 PathProgramCache]: Analyzing trace with hash -741391852, now seen corresponding path program 1 times [2022-11-02 20:41:43,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:43,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001981420] [2022-11-02 20:41:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:43,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:41:43,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:43,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001981420] [2022-11-02 20:41:43,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001981420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:43,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:43,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:43,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696651912] [2022-11-02 20:41:43,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:43,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:43,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:43,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:43,539 INFO L87 Difference]: Start difference. First operand 2527 states and 8108 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:43,809 INFO L93 Difference]: Finished difference Result 3777 states and 10623 transitions. [2022-11-02 20:41:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:41:43,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:41:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:43,824 INFO L225 Difference]: With dead ends: 3777 [2022-11-02 20:41:43,824 INFO L226 Difference]: Without dead ends: 3745 [2022-11-02 20:41:43,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:43,825 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 145 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:43,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 31 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:41:43,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2022-11-02 20:41:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 2373. [2022-11-02 20:41:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2316 states have (on average 3.2525906735751295) internal successors, (7533), 2372 states have internal predecessors, (7533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 7533 transitions. [2022-11-02 20:41:43,932 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 7533 transitions. Word has length 11 [2022-11-02 20:41:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:43,932 INFO L495 AbstractCegarLoop]: Abstraction has 2373 states and 7533 transitions. [2022-11-02 20:41:43,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 7533 transitions. [2022-11-02 20:41:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:41:43,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:43,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:43,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:41:43,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:41:43,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:43,935 INFO L85 PathProgramCache]: Analyzing trace with hash 475586638, now seen corresponding path program 1 times [2022-11-02 20:41:43,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:43,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17731695] [2022-11-02 20:41:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:43,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:43,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:43,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17731695] [2022-11-02 20:41:43,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17731695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:43,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801667895] [2022-11-02 20:41:43,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:43,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:43,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:43,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:44,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:41:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:44,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:41:44,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:44,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:44,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801667895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:44,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:41:44,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:41:44,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731514797] [2022-11-02 20:41:44,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:44,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:44,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:44,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:44,131 INFO L87 Difference]: Start difference. First operand 2373 states and 7533 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:44,242 INFO L93 Difference]: Finished difference Result 948 states and 3103 transitions. [2022-11-02 20:41:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:41:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 20:41:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:44,246 INFO L225 Difference]: With dead ends: 948 [2022-11-02 20:41:44,247 INFO L226 Difference]: Without dead ends: 948 [2022-11-02 20:41:44,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:44,248 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 80 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:44,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 14 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-11-02 20:41:44,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 948. [2022-11-02 20:41:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 943 states have (on average 3.2905620360551433) internal successors, (3103), 947 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 3103 transitions. [2022-11-02 20:41:44,273 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 3103 transitions. Word has length 13 [2022-11-02 20:41:44,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:44,274 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 3103 transitions. [2022-11-02 20:41:44,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,274 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 3103 transitions. [2022-11-02 20:41:44,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:41:44,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:44,276 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:44,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:44,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:44,490 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:41:44,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:44,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1227232580, now seen corresponding path program 1 times [2022-11-02 20:41:44,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:44,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218765593] [2022-11-02 20:41:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:44,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:41:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:44,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218765593] [2022-11-02 20:41:44,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218765593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:44,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:44,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:44,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872535070] [2022-11-02 20:41:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:44,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:44,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:44,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:44,614 INFO L87 Difference]: Start difference. First operand 948 states and 3103 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:44,762 INFO L93 Difference]: Finished difference Result 1130 states and 3255 transitions. [2022-11-02 20:41:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:41:44,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:41:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:44,769 INFO L225 Difference]: With dead ends: 1130 [2022-11-02 20:41:44,769 INFO L226 Difference]: Without dead ends: 1130 [2022-11-02 20:41:44,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:44,770 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 77 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:44,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 20 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:44,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2022-11-02 20:41:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 911. [2022-11-02 20:41:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 906 states have (on average 3.1004415011037527) internal successors, (2809), 910 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 2809 transitions. [2022-11-02 20:41:44,807 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 2809 transitions. Word has length 15 [2022-11-02 20:41:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:44,808 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 2809 transitions. [2022-11-02 20:41:44,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 2809 transitions. [2022-11-02 20:41:44,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:41:44,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:44,810 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-02 20:41:44,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:41:44,810 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:41:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:44,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1224618436, now seen corresponding path program 1 times [2022-11-02 20:41:44,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:44,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217594021] [2022-11-02 20:41:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:44,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:44,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:44,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:44,854 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:41:44,854 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-02 20:41:44,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-02 20:41:44,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-02 20:41:44,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-02 20:41:44,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-02 20:41:44,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-02 20:41:44,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-02 20:41:44,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-02 20:41:44,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-02 20:41:44,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-02 20:41:44,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-02 20:41:44,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-02 20:41:44,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-02 20:41:44,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:41:44,859 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:44,859 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:41:44,859 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:41:44,884 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:41:44,888 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:41:44,888 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 120 transitions, 284 flow [2022-11-02 20:41:44,890 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 120 transitions, 284 flow [2022-11-02 20:41:44,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 120 transitions, 284 flow [2022-11-02 20:41:44,988 INFO L130 PetriNetUnfolder]: 66/540 cut-off events. [2022-11-02 20:41:44,988 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-02 20:41:44,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 540 events. 66/540 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1889 event pairs, 6 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 327. Up to 32 conditions per place. [2022-11-02 20:41:45,003 INFO L118 LiptonReduction]: Number of co-enabled transitions 6000 [2022-11-02 20:41:48,378 INFO L133 LiptonReduction]: Checked pairs total: 16129 [2022-11-02 20:41:48,378 INFO L135 LiptonReduction]: Total number of compositions: 119 [2022-11-02 20:41:48,380 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 50 transitions, 144 flow [2022-11-02 20:41:49,365 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 29046 states, 28039 states have (on average 4.901565676379329) internal successors, (137435), 29045 states have internal predecessors, (137435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:49,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:49,366 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;@61e83e88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:49,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-02 20:41:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 29046 states, 28039 states have (on average 4.901565676379329) internal successors, (137435), 29045 states have internal predecessors, (137435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:41:49,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:49,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:41:49,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:41:49,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:49,417 INFO L85 PathProgramCache]: Analyzing trace with hash 30667549, now seen corresponding path program 1 times [2022-11-02 20:41:49,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:49,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579920232] [2022-11-02 20:41:49,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:49,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,465 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 20:41:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:49,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579920232] [2022-11-02 20:41:49,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579920232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:49,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:49,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:49,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702153538] [2022-11-02 20:41:49,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:49,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:49,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:49,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:49,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:49,515 INFO L87 Difference]: Start difference. First operand has 29046 states, 28039 states have (on average 4.901565676379329) internal successors, (137435), 29045 states have internal predecessors, (137435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:49,881 INFO L93 Difference]: Finished difference Result 18369 states and 78640 transitions. [2022-11-02 20:41:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:49,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:41:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:50,148 INFO L225 Difference]: With dead ends: 18369 [2022-11-02 20:41:50,162 INFO L226 Difference]: Without dead ends: 17639 [2022-11-02 20:41:50,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:50,163 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:50,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 6 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:50,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17639 states. [2022-11-02 20:41:51,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17639 to 16031. [2022-11-02 20:41:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16031 states, 15756 states have (on average 4.450812388931201) internal successors, (70127), 16030 states have internal predecessors, (70127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16031 states to 16031 states and 70127 transitions. [2022-11-02 20:41:51,546 INFO L78 Accepts]: Start accepts. Automaton has 16031 states and 70127 transitions. Word has length 4 [2022-11-02 20:41:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:51,546 INFO L495 AbstractCegarLoop]: Abstraction has 16031 states and 70127 transitions. [2022-11-02 20:41:51,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 16031 states and 70127 transitions. [2022-11-02 20:41:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:41:51,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:51,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:41:51,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:41:51,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:41:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:51,549 INFO L85 PathProgramCache]: Analyzing trace with hash 950689315, now seen corresponding path program 1 times [2022-11-02 20:41:51,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:51,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350647436] [2022-11-02 20:41:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:51,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:51,573 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 20:41:51,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:51,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350647436] [2022-11-02 20:41:51,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350647436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:51,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:51,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:51,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986221833] [2022-11-02 20:41:51,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:51,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:51,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:51,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:51,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:51,576 INFO L87 Difference]: Start difference. First operand 16031 states and 70127 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:51,813 INFO L93 Difference]: Finished difference Result 16027 states and 70118 transitions. [2022-11-02 20:41:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:51,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:41:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:51,922 INFO L225 Difference]: With dead ends: 16027 [2022-11-02 20:41:51,922 INFO L226 Difference]: Without dead ends: 16027 [2022-11-02 20:41:51,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:51,924 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 25 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:51,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 14 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:52,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16027 states. [2022-11-02 20:41:52,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16027 to 16027. [2022-11-02 20:41:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16027 states, 15753 states have (on average 4.4510886815209805) internal successors, (70118), 16026 states have internal predecessors, (70118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16027 states to 16027 states and 70118 transitions. [2022-11-02 20:41:52,817 INFO L78 Accepts]: Start accepts. Automaton has 16027 states and 70118 transitions. Word has length 5 [2022-11-02 20:41:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:52,818 INFO L495 AbstractCegarLoop]: Abstraction has 16027 states and 70118 transitions. [2022-11-02 20:41:52,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 16027 states and 70118 transitions. [2022-11-02 20:41:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:41:52,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:52,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:41:52,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:41:52,819 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:41:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:52,820 INFO L85 PathProgramCache]: Analyzing trace with hash 950689316, now seen corresponding path program 1 times [2022-11-02 20:41:52,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:52,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99016279] [2022-11-02 20:41:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:52,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:52,845 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 20:41:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:52,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99016279] [2022-11-02 20:41:52,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99016279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:52,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:52,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439579295] [2022-11-02 20:41:52,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:52,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:52,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:52,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:52,848 INFO L87 Difference]: Start difference. First operand 16027 states and 70118 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:52,999 INFO L93 Difference]: Finished difference Result 15113 states and 65772 transitions. [2022-11-02 20:41:53,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:53,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:41:53,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:53,296 INFO L225 Difference]: With dead ends: 15113 [2022-11-02 20:41:53,296 INFO L226 Difference]: Without dead ends: 15113 [2022-11-02 20:41:53,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:53,297 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:53,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 6 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15113 states. [2022-11-02 20:41:53,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15113 to 15113. [2022-11-02 20:41:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15113 states, 14865 states have (on average 4.4246215943491425) internal successors, (65772), 15112 states have internal predecessors, (65772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15113 states to 15113 states and 65772 transitions. [2022-11-02 20:41:53,933 INFO L78 Accepts]: Start accepts. Automaton has 15113 states and 65772 transitions. Word has length 5 [2022-11-02 20:41:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:53,933 INFO L495 AbstractCegarLoop]: Abstraction has 15113 states and 65772 transitions. [2022-11-02 20:41:53,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 15113 states and 65772 transitions. [2022-11-02 20:41:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:41:53,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:53,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:41:53,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:41:53,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:41:53,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:53,935 INFO L85 PathProgramCache]: Analyzing trace with hash 105990220, now seen corresponding path program 1 times [2022-11-02 20:41:53,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:53,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605696834] [2022-11-02 20:41:53,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:53,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,968 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 20:41:53,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:53,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605696834] [2022-11-02 20:41:53,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605696834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:53,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:53,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:41:53,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241084394] [2022-11-02 20:41:53,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:53,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:53,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:53,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:53,971 INFO L87 Difference]: Start difference. First operand 15113 states and 65772 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 20:41:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:54,193 INFO L93 Difference]: Finished difference Result 14203 states and 61435 transitions. [2022-11-02 20:41:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:54,193 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 20:41:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:54,296 INFO L225 Difference]: With dead ends: 14203 [2022-11-02 20:41:54,296 INFO L226 Difference]: Without dead ends: 14203 [2022-11-02 20:41:54,296 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 20:41:54,297 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:54,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 10 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:54,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14203 states. [2022-11-02 20:41:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14203 to 14203. [2022-11-02 20:41:55,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14203 states, 13980 states have (on average 4.3944921316165955) internal successors, (61435), 14202 states have internal predecessors, (61435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14203 states to 14203 states and 61435 transitions. [2022-11-02 20:41:55,330 INFO L78 Accepts]: Start accepts. Automaton has 14203 states and 61435 transitions. Word has length 9 [2022-11-02 20:41:55,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:55,330 INFO L495 AbstractCegarLoop]: Abstraction has 14203 states and 61435 transitions. [2022-11-02 20:41:55,331 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 20:41:55,331 INFO L276 IsEmpty]: Start isEmpty. Operand 14203 states and 61435 transitions. [2022-11-02 20:41:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:41:55,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:55,332 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:55,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:41:55,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:41:55,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1976730619, now seen corresponding path program 1 times [2022-11-02 20:41:55,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:55,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002906596] [2022-11-02 20:41:55,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:55,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:55,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:55,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002906596] [2022-11-02 20:41:55,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002906596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:55,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605745942] [2022-11-02 20:41:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:55,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:55,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:55,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:55,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:41:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:55,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:41:55,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:55,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:55,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605745942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:55,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:55,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:41:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487924530] [2022-11-02 20:41:55,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:55,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:55,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:55,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:55,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:55,570 INFO L87 Difference]: Start difference. First operand 14203 states and 61435 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:55,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:55,870 INFO L93 Difference]: Finished difference Result 16183 states and 65772 transitions. [2022-11-02 20:41:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:41:55,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:41:55,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:55,955 INFO L225 Difference]: With dead ends: 16183 [2022-11-02 20:41:55,955 INFO L226 Difference]: Without dead ends: 16119 [2022-11-02 20:41:55,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:55,956 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 84 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:55,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 21 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:41:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16119 states. [2022-11-02 20:41:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16119 to 12681. [2022-11-02 20:41:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12681 states, 12464 states have (on average 4.336489088575096) internal successors, (54050), 12680 states have internal predecessors, (54050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12681 states to 12681 states and 54050 transitions. [2022-11-02 20:41:56,558 INFO L78 Accepts]: Start accepts. Automaton has 12681 states and 54050 transitions. Word has length 11 [2022-11-02 20:41:56,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:56,558 INFO L495 AbstractCegarLoop]: Abstraction has 12681 states and 54050 transitions. [2022-11-02 20:41:56,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 12681 states and 54050 transitions. [2022-11-02 20:41:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:41:56,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:56,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:56,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-02 20:41:56,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-02 20:41:56,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:41:56,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:56,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1711912940, now seen corresponding path program 1 times [2022-11-02 20:41:56,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:56,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489921134] [2022-11-02 20:41:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:56,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:56,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:56,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489921134] [2022-11-02 20:41:56,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489921134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:56,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410708313] [2022-11-02 20:41:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:56,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:56,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:56,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:56,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:41:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:56,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:41:56,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:56,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:56,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410708313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:56,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:56,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-02 20:41:56,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177040120] [2022-11-02 20:41:56,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:56,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:56,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:56,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:56,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:56,899 INFO L87 Difference]: Start difference. First operand 12681 states and 54050 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 20:41:57,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:57,478 INFO L93 Difference]: Finished difference Result 18747 states and 68921 transitions. [2022-11-02 20:41:57,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:57,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 20:41:57,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:57,582 INFO L225 Difference]: With dead ends: 18747 [2022-11-02 20:41:57,583 INFO L226 Difference]: Without dead ends: 18747 [2022-11-02 20:41:57,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:57,586 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:57,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 13 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18747 states. [2022-11-02 20:41:58,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18747 to 14927. [2022-11-02 20:41:58,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14927 states, 14710 states have (on average 3.996804894629504) internal successors, (58793), 14926 states have internal predecessors, (58793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14927 states to 14927 states and 58793 transitions. [2022-11-02 20:41:58,166 INFO L78 Accepts]: Start accepts. Automaton has 14927 states and 58793 transitions. Word has length 11 [2022-11-02 20:41:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:58,167 INFO L495 AbstractCegarLoop]: Abstraction has 14927 states and 58793 transitions. [2022-11-02 20:41:58,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 20:41:58,167 INFO L276 IsEmpty]: Start isEmpty. Operand 14927 states and 58793 transitions. [2022-11-02 20:41:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:41:58,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:58,168 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:58,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:58,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-02 20:41:58,370 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:41:58,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:58,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1219039608, now seen corresponding path program 1 times [2022-11-02 20:41:58,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:58,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348680162] [2022-11-02 20:41:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:58,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:41:58,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:58,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348680162] [2022-11-02 20:41:58,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348680162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:58,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:58,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:58,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109077206] [2022-11-02 20:41:58,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:58,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:58,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:58,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:58,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:58,430 INFO L87 Difference]: Start difference. First operand 14927 states and 58793 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:58,919 INFO L93 Difference]: Finished difference Result 23147 states and 80262 transitions. [2022-11-02 20:41:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:41:58,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:41:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:59,276 INFO L225 Difference]: With dead ends: 23147 [2022-11-02 20:41:59,277 INFO L226 Difference]: Without dead ends: 23046 [2022-11-02 20:41:59,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:59,279 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 140 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:59,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 26 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:41:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23046 states. [2022-11-02 20:41:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23046 to 16470. [2022-11-02 20:41:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16470 states, 16196 states have (on average 3.8503951592985923) internal successors, (62361), 16469 states have internal predecessors, (62361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16470 states to 16470 states and 62361 transitions. [2022-11-02 20:41:59,814 INFO L78 Accepts]: Start accepts. Automaton has 16470 states and 62361 transitions. Word has length 11 [2022-11-02 20:41:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:59,814 INFO L495 AbstractCegarLoop]: Abstraction has 16470 states and 62361 transitions. [2022-11-02 20:41:59,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 16470 states and 62361 transitions. [2022-11-02 20:41:59,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:41:59,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:59,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:59,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:41:59,816 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:41:59,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:59,817 INFO L85 PathProgramCache]: Analyzing trace with hash 314201596, now seen corresponding path program 1 times [2022-11-02 20:41:59,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:59,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649566090] [2022-11-02 20:41:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:59,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:59,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:59,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649566090] [2022-11-02 20:41:59,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649566090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:59,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150392656] [2022-11-02 20:41:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:59,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:59,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:59,852 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:59,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:41:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:59,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:41:59,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:59,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:59,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150392656] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:59,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:41:59,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-02 20:41:59,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058924106] [2022-11-02 20:41:59,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:59,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:41:59,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:59,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:41:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:41:59,971 INFO L87 Difference]: Start difference. First operand 16470 states and 62361 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:00,214 INFO L93 Difference]: Finished difference Result 16376 states and 61833 transitions. [2022-11-02 20:42:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:42:00,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:42:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:00,289 INFO L225 Difference]: With dead ends: 16376 [2022-11-02 20:42:00,289 INFO L226 Difference]: Without dead ends: 16376 [2022-11-02 20:42:00,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:42:00,290 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 114 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:00,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 22 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:42:00,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16376 states. [2022-11-02 20:42:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16376 to 16376. [2022-11-02 20:42:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16376 states, 16102 states have (on average 3.8400819773941124) internal successors, (61833), 16375 states have internal predecessors, (61833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16376 states to 16376 states and 61833 transitions. [2022-11-02 20:42:00,913 INFO L78 Accepts]: Start accepts. Automaton has 16376 states and 61833 transitions. Word has length 13 [2022-11-02 20:42:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:00,913 INFO L495 AbstractCegarLoop]: Abstraction has 16376 states and 61833 transitions. [2022-11-02 20:42:00,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 16376 states and 61833 transitions. [2022-11-02 20:42:00,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:42:00,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:00,915 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:00,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:01,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:01,117 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:42:01,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:01,117 INFO L85 PathProgramCache]: Analyzing trace with hash 462245373, now seen corresponding path program 1 times [2022-11-02 20:42:01,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:01,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585732206] [2022-11-02 20:42:01,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:01,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:42:01,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:01,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585732206] [2022-11-02 20:42:01,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585732206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:01,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:01,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:01,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636965342] [2022-11-02 20:42:01,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:01,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:42:01,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:01,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:42:01,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:42:01,187 INFO L87 Difference]: Start difference. First operand 16376 states and 61833 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:01,605 INFO L93 Difference]: Finished difference Result 24844 states and 86207 transitions. [2022-11-02 20:42:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:42:01,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:42:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:01,706 INFO L225 Difference]: With dead ends: 24844 [2022-11-02 20:42:01,707 INFO L226 Difference]: Without dead ends: 24768 [2022-11-02 20:42:01,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:42:01,707 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 153 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:01,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 26 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:42:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24768 states. [2022-11-02 20:42:02,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24768 to 16297. [2022-11-02 20:42:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16297 states, 16035 states have (on average 3.8223261615216715) internal successors, (61291), 16296 states have internal predecessors, (61291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16297 states to 16297 states and 61291 transitions. [2022-11-02 20:42:02,350 INFO L78 Accepts]: Start accepts. Automaton has 16297 states and 61291 transitions. Word has length 15 [2022-11-02 20:42:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:02,350 INFO L495 AbstractCegarLoop]: Abstraction has 16297 states and 61291 transitions. [2022-11-02 20:42:02,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 16297 states and 61291 transitions. [2022-11-02 20:42:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:42:02,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:02,353 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:02,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:42:02,353 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:42:02,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1349437192, now seen corresponding path program 1 times [2022-11-02 20:42:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:02,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758051641] [2022-11-02 20:42:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:02,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:42:02,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:02,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758051641] [2022-11-02 20:42:02,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758051641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:42:02,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751741423] [2022-11-02 20:42:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:02,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:02,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:02,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:02,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:42:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:02,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:42:02,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:42:02,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:42:02,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751741423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:02,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:42:02,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-02 20:42:02,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396408810] [2022-11-02 20:42:02,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:02,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:42:02,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:02,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:42:02,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:42:02,653 INFO L87 Difference]: Start difference. First operand 16297 states and 61291 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:03,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:03,405 INFO L93 Difference]: Finished difference Result 27865 states and 94473 transitions. [2022-11-02 20:42:03,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:03,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 20:42:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:03,783 INFO L225 Difference]: With dead ends: 27865 [2022-11-02 20:42:03,783 INFO L226 Difference]: Without dead ends: 26531 [2022-11-02 20:42:03,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:42:03,790 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 386 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:03,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 52 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:42:03,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26531 states. [2022-11-02 20:42:04,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26531 to 9864. [2022-11-02 20:42:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9864 states, 9818 states have (on average 3.792829496842534) internal successors, (37238), 9863 states have internal predecessors, (37238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9864 states to 9864 states and 37238 transitions. [2022-11-02 20:42:04,247 INFO L78 Accepts]: Start accepts. Automaton has 9864 states and 37238 transitions. Word has length 18 [2022-11-02 20:42:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:04,248 INFO L495 AbstractCegarLoop]: Abstraction has 9864 states and 37238 transitions. [2022-11-02 20:42:04,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 9864 states and 37238 transitions. [2022-11-02 20:42:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:42:04,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:04,251 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:04,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:04,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f1cf79-0df4-4308-a117-1272ee5e92e5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:04,451 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-02 20:42:04,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash 165416162, now seen corresponding path program 1 times [2022-11-02 20:42:04,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:04,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250153086] [2022-11-02 20:42:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:04,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:42:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:04,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:42:04,482 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:42:04,482 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-02 20:42:04,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2022-11-02 20:42:04,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2022-11-02 20:42:04,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2022-11-02 20:42:04,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2022-11-02 20:42:04,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2022-11-02 20:42:04,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2022-11-02 20:42:04,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2022-11-02 20:42:04,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2022-11-02 20:42:04,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2022-11-02 20:42:04,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2022-11-02 20:42:04,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2022-11-02 20:42:04,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2022-11-02 20:42:04,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2022-11-02 20:42:04,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2022-11-02 20:42:04,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 20:42:04,486 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:04,487 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:42:04,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-02 20:42:04,508 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-02 20:42:04,510 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:42:04,510 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 134 transitions, 328 flow [2022-11-02 20:42:04,511 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 134 transitions, 328 flow [2022-11-02 20:42:04,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 134 transitions, 328 flow [2022-11-02 20:42:04,686 INFO L130 PetriNetUnfolder]: 134/985 cut-off events. [2022-11-02 20:42:04,686 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-02 20:42:04,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 985 events. 134/985 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4562 event pairs, 23 based on Foata normal form. 0/785 useless extension candidates. Maximal degree in co-relation 585. Up to 80 conditions per place. [2022-11-02 20:42:04,722 INFO L118 LiptonReduction]: Number of co-enabled transitions 8400 [2022-11-02 20:42:08,152 INFO L133 LiptonReduction]: Checked pairs total: 29993 [2022-11-02 20:42:08,152 INFO L135 LiptonReduction]: Total number of compositions: 138 [2022-11-02 20:42:08,153 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 64 transitions, 188 flow [2022-11-02 20:42:19,724 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 296599 states, 292802 states have (on average 6.132963572653193) internal successors, (1795744), 296598 states have internal predecessors, (1795744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:19,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:42:19,726 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;@61e83e88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:42:19,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-02 20:42:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 296599 states, 292802 states have (on average 6.132963572653193) internal successors, (1795744), 296598 states have internal predecessors, (1795744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:42:20,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:20,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:42:20,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [salethreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, salethreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:42:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash 39476873, now seen corresponding path program 1 times [2022-11-02 20:42:20,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:20,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507818576] [2022-11-02 20:42:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:20,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:20,178 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 20:42:20,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:20,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507818576] [2022-11-02 20:42:20,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507818576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:20,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:20,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:42:20,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462367798] [2022-11-02 20:42:20,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:20,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:42:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:20,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:42:20,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:42:20,703 INFO L87 Difference]: Start difference. First operand has 296599 states, 292802 states have (on average 6.132963572653193) internal successors, (1795744), 296598 states have internal predecessors, (1795744), 0 states have call successors, (0), 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 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:25,322 INFO L93 Difference]: Finished difference Result 150303 states and 912751 transitions. [2022-11-02 20:42:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:42:25,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:42:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:26,590 INFO L225 Difference]: With dead ends: 150303 [2022-11-02 20:42:26,591 INFO L226 Difference]: Without dead ends: 147177 [2022-11-02 20:42:26,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:42:26,591 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:26,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:42:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147177 states. [2022-11-02 20:42:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147177 to 147177. [2022-11-02 20:42:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147177 states, 146357 states have (on average 6.086992764268193) internal successors, (890874), 147176 states have internal predecessors, (890874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)