./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF --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 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:53:15,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:53:15,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:53:15,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:53:15,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:53:15,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:53:15,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:53:15,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:53:15,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:53:15,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:53:15,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:53:15,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:53:15,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:53:15,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:53:15,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:53:15,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:53:15,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:53:15,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:53:15,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:53:15,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:53:15,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:53:15,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:53:15,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:53:15,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:53:15,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:53:15,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:53:15,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:53:15,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:53:15,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:53:15,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:53:15,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:53:15,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:53:15,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:53:15,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:53:15,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:53:15,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:53:15,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:53:15,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:53:15,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:53:15,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:53:15,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:53:15,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-20 05:53:15,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:53:15,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:53:15,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:53:15,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:53:15,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:53:15,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:53:15,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:53:15,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:53:15,783 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:53:15,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:53:15,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:53:15,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:53:15,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:53:15,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:53:15,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:53:15,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:53:15,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:53:15,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:53:15,785 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 05:53:15,785 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:53:15,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:53:15,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:53:15,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:53:15,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:53:15,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:53:15,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:53:15,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:53:15,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:53:15,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:53:15,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:53:15,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:53:15,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:53:15,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:53:15,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:53:15,788 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_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 [2021-11-20 05:53:16,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:53:16,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:53:16,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:53:16,076 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:53:16,077 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:53:16,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2021-11-20 05:53:16,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/data/5ab7cdf46/49c2a7a042c544beb766bfba6f3dc53c/FLAG6628c202c [2021-11-20 05:53:16,878 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:53:16,880 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2021-11-20 05:53:16,908 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/data/5ab7cdf46/49c2a7a042c544beb766bfba6f3dc53c/FLAG6628c202c [2021-11-20 05:53:17,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/data/5ab7cdf46/49c2a7a042c544beb766bfba6f3dc53c [2021-11-20 05:53:17,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:53:17,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:53:17,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:53:17,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:53:17,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:53:17,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:17,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b30ab19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17, skipping insertion in model container [2021-11-20 05:53:17,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:17,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:53:17,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:53:17,583 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_427ae747-da10-4f06-ad6e-6faf698e0ee3/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i[33021,33034] [2021-11-20 05:53:17,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:53:17,744 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:53:17,791 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_427ae747-da10-4f06-ad6e-6faf698e0ee3/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i[33021,33034] [2021-11-20 05:53:17,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:53:17,915 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:53:17,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17 WrapperNode [2021-11-20 05:53:17,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:53:17,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:53:17,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:53:17,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:53:17,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:17,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:18,073 INFO L137 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1451 [2021-11-20 05:53:18,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:53:18,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:53:18,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:53:18,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:53:18,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:18,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:18,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:18,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:18,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:18,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:18,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:18,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:53:18,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:53:18,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:53:18,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:53:18,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (1/1) ... [2021-11-20 05:53:18,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:53:18,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:18,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:53:18,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:53:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:53:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 05:53:18,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 05:53:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:53:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 05:53:18,404 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 05:53:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:53:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:53:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:53:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:53:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:53:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:53:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:53:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:53:18,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:53:18,688 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:53:18,689 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:53:19,954 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:53:19,963 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:53:19,963 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-11-20 05:53:19,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:19 BoogieIcfgContainer [2021-11-20 05:53:19,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:53:19,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:53:19,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:53:19,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:53:19,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:53:17" (1/3) ... [2021-11-20 05:53:19,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fe001b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:19, skipping insertion in model container [2021-11-20 05:53:19,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:17" (2/3) ... [2021-11-20 05:53:19,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fe001b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:19, skipping insertion in model container [2021-11-20 05:53:19,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:19" (3/3) ... [2021-11-20 05:53:19,973 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-3.i [2021-11-20 05:53:19,978 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:53:19,979 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-20 05:53:20,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:53:20,032 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:53:20,032 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-20 05:53:20,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:53:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 05:53:20,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:20,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 05:53:20,059 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:20,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2021-11-20 05:53:20,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:20,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457548902] [2021-11-20 05:53:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:20,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:20,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:20,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457548902] [2021-11-20 05:53:20,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457548902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:20,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:20,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:20,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275481751] [2021-11-20 05:53:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:20,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:20,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:20,260 INFO L87 Difference]: Start difference. First operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:20,388 INFO L93 Difference]: Finished difference Result 715 states and 1205 transitions. [2021-11-20 05:53:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:20,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 05:53:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:20,404 INFO L225 Difference]: With dead ends: 715 [2021-11-20 05:53:20,405 INFO L226 Difference]: Without dead ends: 392 [2021-11-20 05:53:20,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:20,413 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 217 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:20,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 725 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-20 05:53:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2021-11-20 05:53:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 211 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:53:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2021-11-20 05:53:20,479 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 6 [2021-11-20 05:53:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:20,480 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2021-11-20 05:53:20,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2021-11-20 05:53:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:53:20,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:20,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:20,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:53:20,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:20,495 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2021-11-20 05:53:20,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:20,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15499133] [2021-11-20 05:53:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:20,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:20,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:20,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346406788] [2021-11-20 05:53:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:20,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:20,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:20,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:20,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:53:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:20,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:20,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:21,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:21,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:21,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15499133] [2021-11-20 05:53:21,174 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:21,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346406788] [2021-11-20 05:53:21,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346406788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:21,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:21,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:21,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414427929] [2021-11-20 05:53:21,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:21,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:21,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:21,188 INFO L87 Difference]: Start difference. First operand 220 states and 294 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:21,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:21,292 INFO L93 Difference]: Finished difference Result 455 states and 613 transitions. [2021-11-20 05:53:21,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:21,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-20 05:53:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:21,297 INFO L225 Difference]: With dead ends: 455 [2021-11-20 05:53:21,297 INFO L226 Difference]: Without dead ends: 241 [2021-11-20 05:53:21,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:21,310 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:21,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-20 05:53:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-11-20 05:53:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 217 states have (on average 1.2995391705069124) internal successors, (282), 231 states have internal predecessors, (282), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:53:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-11-20 05:53:21,345 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 103 [2021-11-20 05:53:21,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:21,346 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-11-20 05:53:21,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-11-20 05:53:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:53:21,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:21,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:21,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:21,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:21,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:21,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2021-11-20 05:53:21,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:21,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730827589] [2021-11-20 05:53:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:21,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:21,608 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:21,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557021082] [2021-11-20 05:53:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:21,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:21,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:21,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:21,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:53:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:21,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:21,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:22,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:22,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:22,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730827589] [2021-11-20 05:53:22,108 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:22,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557021082] [2021-11-20 05:53:22,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557021082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:22,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:22,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:22,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821850414] [2021-11-20 05:53:22,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:22,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:22,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:22,111 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:22,182 INFO L93 Difference]: Finished difference Result 495 states and 653 transitions. [2021-11-20 05:53:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:22,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-20 05:53:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:22,186 INFO L225 Difference]: With dead ends: 495 [2021-11-20 05:53:22,186 INFO L226 Difference]: Without dead ends: 261 [2021-11-20 05:53:22,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:22,190 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:22,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:22,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-20 05:53:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-11-20 05:53:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 251 states have internal predecessors, (302), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:53:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2021-11-20 05:53:22,222 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 103 [2021-11-20 05:53:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:22,224 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2021-11-20 05:53:22,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2021-11-20 05:53:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:53:22,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:22,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:22,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:22,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:22,447 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2021-11-20 05:53:22,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:22,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323887223] [2021-11-20 05:53:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:22,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:22,477 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:22,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199196061] [2021-11-20 05:53:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:22,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:22,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:22,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:22,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:53:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:22,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:23,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:23,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:23,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323887223] [2021-11-20 05:53:23,017 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:23,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199196061] [2021-11-20 05:53:23,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199196061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:23,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:23,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:53:23,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442827739] [2021-11-20 05:53:23,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:23,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:23,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:23,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:23,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:23,020 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:23,091 INFO L93 Difference]: Finished difference Result 505 states and 653 transitions. [2021-11-20 05:53:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:23,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-20 05:53:23,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:23,094 INFO L225 Difference]: With dead ends: 505 [2021-11-20 05:53:23,094 INFO L226 Difference]: Without dead ends: 251 [2021-11-20 05:53:23,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:23,096 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 239 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:23,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 562 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:23,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-20 05:53:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2021-11-20 05:53:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 237 states have internal predecessors, (281), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:53:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2021-11-20 05:53:23,107 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 103 [2021-11-20 05:53:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:23,108 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2021-11-20 05:53:23,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2021-11-20 05:53:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:53:23,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:23,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:23,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:23,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:23,329 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:23,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2021-11-20 05:53:23,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:23,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886819249] [2021-11-20 05:53:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:23,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:23,361 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:23,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023581682] [2021-11-20 05:53:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:23,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:23,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:23,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:23,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:53:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:23,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:23,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:23,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:23,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:23,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886819249] [2021-11-20 05:53:23,792 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:23,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023581682] [2021-11-20 05:53:23,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023581682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:23,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:23,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:53:23,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188007577] [2021-11-20 05:53:23,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:23,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:23,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:23,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:23,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:23,796 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:23,883 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2021-11-20 05:53:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:23,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-20 05:53:23,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:23,887 INFO L225 Difference]: With dead ends: 566 [2021-11-20 05:53:23,887 INFO L226 Difference]: Without dead ends: 326 [2021-11-20 05:53:23,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:23,889 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 232 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:23,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 857 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-20 05:53:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2021-11-20 05:53:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 209 states have (on average 1.244019138755981) internal successors, (260), 223 states have internal predecessors, (260), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:53:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 292 transitions. [2021-11-20 05:53:23,901 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 292 transitions. Word has length 103 [2021-11-20 05:53:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:23,902 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 292 transitions. [2021-11-20 05:53:23,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 292 transitions. [2021-11-20 05:53:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:53:23,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:23,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:23,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:24,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:24,122 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:24,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:24,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2021-11-20 05:53:24,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:24,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980960419] [2021-11-20 05:53:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:24,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:24,141 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:24,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927032345] [2021-11-20 05:53:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:24,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:24,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:24,143 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:24,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:53:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:24,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:24,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:24,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:24,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:24,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980960419] [2021-11-20 05:53:24,588 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:24,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927032345] [2021-11-20 05:53:24,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927032345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:24,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:24,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:24,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744120692] [2021-11-20 05:53:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:24,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:24,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:24,590 INFO L87 Difference]: Start difference. First operand 232 states and 292 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:24,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:24,646 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2021-11-20 05:53:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:53:24,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-20 05:53:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:24,655 INFO L225 Difference]: With dead ends: 416 [2021-11-20 05:53:24,655 INFO L226 Difference]: Without dead ends: 415 [2021-11-20 05:53:24,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:24,666 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 105 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:24,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 936 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-20 05:53:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2021-11-20 05:53:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 384 states have (on average 1.2213541666666667) internal successors, (469), 398 states have internal predecessors, (469), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:53:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 513 transitions. [2021-11-20 05:53:24,708 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 513 transitions. Word has length 103 [2021-11-20 05:53:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:24,709 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 513 transitions. [2021-11-20 05:53:24,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:24,709 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 513 transitions. [2021-11-20 05:53:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-20 05:53:24,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:24,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:24,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:24,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 05:53:24,934 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2021-11-20 05:53:24,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:24,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599340378] [2021-11-20 05:53:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:24,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:24,966 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:24,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885935634] [2021-11-20 05:53:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:24,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:24,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:24,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:25,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:53:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:25,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:25,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:25,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:25,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599340378] [2021-11-20 05:53:25,410 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:25,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885935634] [2021-11-20 05:53:25,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885935634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:25,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:25,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:25,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514973101] [2021-11-20 05:53:25,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:25,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:25,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:25,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:25,413 INFO L87 Difference]: Start difference. First operand 413 states and 513 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:25,451 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2021-11-20 05:53:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:25,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-20 05:53:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:25,455 INFO L225 Difference]: With dead ends: 413 [2021-11-20 05:53:25,455 INFO L226 Difference]: Without dead ends: 412 [2021-11-20 05:53:25,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:25,457 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 135 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:25,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 553 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:25,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-20 05:53:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-11-20 05:53:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 384 states have (on average 1.21875) internal successors, (468), 397 states have internal predecessors, (468), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:53:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 512 transitions. [2021-11-20 05:53:25,483 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 512 transitions. Word has length 104 [2021-11-20 05:53:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:25,484 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 512 transitions. [2021-11-20 05:53:25,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 512 transitions. [2021-11-20 05:53:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 05:53:25,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:25,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:25,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:25,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:25,710 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:25,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1365413568, now seen corresponding path program 1 times [2021-11-20 05:53:25,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:25,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541890066] [2021-11-20 05:53:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:25,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:25,735 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:25,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804743666] [2021-11-20 05:53:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:25,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:25,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:25,736 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:25,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 05:53:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:53:25,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:26,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:26,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:26,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541890066] [2021-11-20 05:53:26,423 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:26,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804743666] [2021-11-20 05:53:26,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804743666] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:26,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:26,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-20 05:53:26,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349190585] [2021-11-20 05:53:26,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:26,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:53:26,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:26,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:53:26,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:26,426 INFO L87 Difference]: Start difference. First operand 412 states and 512 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:26,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:26,557 INFO L93 Difference]: Finished difference Result 634 states and 796 transitions. [2021-11-20 05:53:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:53:26,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-20 05:53:26,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:26,562 INFO L225 Difference]: With dead ends: 634 [2021-11-20 05:53:26,562 INFO L226 Difference]: Without dead ends: 600 [2021-11-20 05:53:26,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:53:26,564 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 647 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:26,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1523 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-11-20 05:53:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-11-20 05:53:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 566 states have (on average 1.2102473498233215) internal successors, (685), 579 states have internal predecessors, (685), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-20 05:53:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 741 transitions. [2021-11-20 05:53:26,591 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 741 transitions. Word has length 108 [2021-11-20 05:53:26,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:26,592 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 741 transitions. [2021-11-20 05:53:26,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 741 transitions. [2021-11-20 05:53:26,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 05:53:26,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:26,596 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:26,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:26,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:26,820 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:26,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2021-11-20 05:53:26,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:26,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291418322] [2021-11-20 05:53:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:26,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:26,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:26,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244144498] [2021-11-20 05:53:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:26,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:26,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:26,837 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:26,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 05:53:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:27,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:53:27,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:27,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:27,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:27,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291418322] [2021-11-20 05:53:27,564 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:27,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244144498] [2021-11-20 05:53:27,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244144498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:27,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:27,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:27,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597100578] [2021-11-20 05:53:27,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:27,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:27,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:27,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:27,569 INFO L87 Difference]: Start difference. First operand 600 states and 741 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:27,640 INFO L93 Difference]: Finished difference Result 1051 states and 1305 transitions. [2021-11-20 05:53:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:27,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-20 05:53:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:27,645 INFO L225 Difference]: With dead ends: 1051 [2021-11-20 05:53:27,645 INFO L226 Difference]: Without dead ends: 598 [2021-11-20 05:53:27,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:27,647 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 65 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:27,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 536 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-20 05:53:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-20 05:53:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 577 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-20 05:53:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 738 transitions. [2021-11-20 05:53:27,674 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 738 transitions. Word has length 108 [2021-11-20 05:53:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:27,674 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 738 transitions. [2021-11-20 05:53:27,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:27,675 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 738 transitions. [2021-11-20 05:53:27,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 05:53:27,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:27,676 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:27,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:27,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-20 05:53:27,891 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:27,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:27,891 INFO L85 PathProgramCache]: Analyzing trace with hash -353330685, now seen corresponding path program 1 times [2021-11-20 05:53:27,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:27,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566935214] [2021-11-20 05:53:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:27,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:27,906 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:27,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677553811] [2021-11-20 05:53:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:27,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:27,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:27,908 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:27,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 05:53:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:28,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:53:28,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:53:28,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:28,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:28,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566935214] [2021-11-20 05:53:28,394 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:28,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677553811] [2021-11-20 05:53:28,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677553811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:28,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:28,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:28,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855653470] [2021-11-20 05:53:28,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:28,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:28,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:28,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:28,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:28,397 INFO L87 Difference]: Start difference. First operand 598 states and 738 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:28,476 INFO L93 Difference]: Finished difference Result 1136 states and 1408 transitions. [2021-11-20 05:53:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 123 [2021-11-20 05:53:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:28,483 INFO L225 Difference]: With dead ends: 1136 [2021-11-20 05:53:28,484 INFO L226 Difference]: Without dead ends: 596 [2021-11-20 05:53:28,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:28,485 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:28,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 534 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-20 05:53:28,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-20 05:53:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 562 states have (on average 1.208185053380783) internal successors, (679), 575 states have internal predecessors, (679), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-20 05:53:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 735 transitions. [2021-11-20 05:53:28,525 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 735 transitions. Word has length 123 [2021-11-20 05:53:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:28,526 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 735 transitions. [2021-11-20 05:53:28,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 735 transitions. [2021-11-20 05:53:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-20 05:53:28,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:28,529 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:28,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:28,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 05:53:28,754 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:28,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash 623227202, now seen corresponding path program 1 times [2021-11-20 05:53:28,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:28,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623067758] [2021-11-20 05:53:28,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:28,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:28,773 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:28,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946905403] [2021-11-20 05:53:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:28,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:28,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:28,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:28,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 05:53:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:29,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:53:29,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 05:53:29,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:29,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:29,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623067758] [2021-11-20 05:53:29,410 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:29,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946905403] [2021-11-20 05:53:29,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946905403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:29,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:29,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:53:29,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832803944] [2021-11-20 05:53:29,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:29,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:29,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:29,412 INFO L87 Difference]: Start difference. First operand 596 states and 735 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:53:29,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:29,471 INFO L93 Difference]: Finished difference Result 1143 states and 1433 transitions. [2021-11-20 05:53:29,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:29,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2021-11-20 05:53:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:29,477 INFO L225 Difference]: With dead ends: 1143 [2021-11-20 05:53:29,477 INFO L226 Difference]: Without dead ends: 599 [2021-11-20 05:53:29,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:29,479 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 2 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:29,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 806 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-20 05:53:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-11-20 05:53:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 578 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-20 05:53:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2021-11-20 05:53:29,508 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 138 [2021-11-20 05:53:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:29,508 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2021-11-20 05:53:29,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:53:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2021-11-20 05:53:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-20 05:53:29,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:29,512 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:29,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:29,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 05:53:29,726 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:29,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:29,727 INFO L85 PathProgramCache]: Analyzing trace with hash -268398914, now seen corresponding path program 1 times [2021-11-20 05:53:29,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:29,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815056685] [2021-11-20 05:53:29,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:29,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:29,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:29,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007844536] [2021-11-20 05:53:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:29,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:29,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:29,765 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:29,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 05:53:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:30,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:53:30,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 05:53:30,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 05:53:30,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:30,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815056685] [2021-11-20 05:53:30,811 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:30,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007844536] [2021-11-20 05:53:30,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007844536] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:30,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:30,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-20 05:53:30,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855045009] [2021-11-20 05:53:30,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:30,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:53:30,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:30,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:53:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:30,814 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:53:31,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:31,020 INFO L93 Difference]: Finished difference Result 1157 states and 1469 transitions. [2021-11-20 05:53:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:53:31,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 142 [2021-11-20 05:53:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:31,025 INFO L225 Difference]: With dead ends: 1157 [2021-11-20 05:53:31,025 INFO L226 Difference]: Without dead ends: 610 [2021-11-20 05:53:31,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:53:31,027 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 16 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:31,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1333 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-11-20 05:53:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2021-11-20 05:53:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2167832167832169) internal successors, (696), 586 states have internal predecessors, (696), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-20 05:53:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 758 transitions. [2021-11-20 05:53:31,055 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 758 transitions. Word has length 142 [2021-11-20 05:53:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:31,055 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 758 transitions. [2021-11-20 05:53:31,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:53:31,056 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 758 transitions. [2021-11-20 05:53:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-20 05:53:31,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:31,058 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:31,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:31,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 05:53:31,278 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:31,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash -841779454, now seen corresponding path program 2 times [2021-11-20 05:53:31,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:31,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28930938] [2021-11-20 05:53:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:31,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:31,296 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:31,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669714337] [2021-11-20 05:53:31,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:53:31,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:31,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:31,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:31,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 05:53:31,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:53:31,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:31,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 05:53:31,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 84 proven. 25 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 05:53:32,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-20 05:53:32,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:32,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28930938] [2021-11-20 05:53:32,598 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:32,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669714337] [2021-11-20 05:53:32,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669714337] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:32,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:32,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2021-11-20 05:53:32,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268714493] [2021-11-20 05:53:32,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:32,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 05:53:32,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 05:53:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:53:32,600 INFO L87 Difference]: Start difference. First operand 608 states and 758 transitions. Second operand has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 05:53:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:33,120 INFO L93 Difference]: Finished difference Result 1216 states and 1577 transitions. [2021-11-20 05:53:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:53:33,121 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 150 [2021-11-20 05:53:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:33,125 INFO L225 Difference]: With dead ends: 1216 [2021-11-20 05:53:33,125 INFO L226 Difference]: Without dead ends: 614 [2021-11-20 05:53:33,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:53:33,127 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 268 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:33,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2099 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:53:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-20 05:53:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 605. [2021-11-20 05:53:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 569 states have (on average 1.2161687170474518) internal successors, (692), 583 states have internal predecessors, (692), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-20 05:53:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 754 transitions. [2021-11-20 05:53:33,155 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 754 transitions. Word has length 150 [2021-11-20 05:53:33,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:33,156 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 754 transitions. [2021-11-20 05:53:33,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 05:53:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 754 transitions. [2021-11-20 05:53:33,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-20 05:53:33,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:33,158 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:33,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:33,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:33,382 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:33,383 INFO L85 PathProgramCache]: Analyzing trace with hash -191480894, now seen corresponding path program 3 times [2021-11-20 05:53:33,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:33,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244072893] [2021-11-20 05:53:33,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:33,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:33,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:33,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391888535] [2021-11-20 05:53:33,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:53:33,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:33,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:33,401 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:33,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 05:53:33,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 05:53:33,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:33,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:53:33,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:53:34,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:34,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:34,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244072893] [2021-11-20 05:53:34,017 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:34,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391888535] [2021-11-20 05:53:34,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391888535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:34,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:34,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:53:34,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233365312] [2021-11-20 05:53:34,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:34,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:53:34,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:53:34,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:34,021 INFO L87 Difference]: Start difference. First operand 605 states and 754 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:53:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:34,118 INFO L93 Difference]: Finished difference Result 605 states and 754 transitions. [2021-11-20 05:53:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:53:34,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 162 [2021-11-20 05:53:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:34,122 INFO L225 Difference]: With dead ends: 605 [2021-11-20 05:53:34,123 INFO L226 Difference]: Without dead ends: 604 [2021-11-20 05:53:34,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:34,124 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 506 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:34,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 1131 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:34,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-20 05:53:34,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2021-11-20 05:53:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 569 states have (on average 1.2126537785588751) internal successors, (690), 582 states have internal predecessors, (690), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-20 05:53:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 752 transitions. [2021-11-20 05:53:34,152 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 752 transitions. Word has length 162 [2021-11-20 05:53:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:34,152 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 752 transitions. [2021-11-20 05:53:34,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:53:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 752 transitions. [2021-11-20 05:53:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-20 05:53:34,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:34,160 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:34,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:34,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:34,375 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:34,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:34,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1864666512, now seen corresponding path program 1 times [2021-11-20 05:53:34,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:34,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811535432] [2021-11-20 05:53:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:34,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:34,397 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:34,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974344673] [2021-11-20 05:53:34,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:34,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:34,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:34,399 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:34,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 05:53:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:34,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:53:34,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:53:35,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:53:36,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811535432] [2021-11-20 05:53:36,449 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974344673] [2021-11-20 05:53:36,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974344673] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:36,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:36,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-20 05:53:36,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245131587] [2021-11-20 05:53:36,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:36,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:53:36,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:53:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:53:36,453 INFO L87 Difference]: Start difference. First operand 604 states and 752 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:53:36,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:36,652 INFO L93 Difference]: Finished difference Result 816 states and 1027 transitions. [2021-11-20 05:53:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:53:36,653 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 361 [2021-11-20 05:53:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:36,659 INFO L225 Difference]: With dead ends: 816 [2021-11-20 05:53:36,659 INFO L226 Difference]: Without dead ends: 815 [2021-11-20 05:53:36,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:53:36,660 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 776 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:36,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 1312 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:36,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-11-20 05:53:36,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 603. [2021-11-20 05:53:36,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 569 states have (on average 1.210896309314587) internal successors, (689), 581 states have internal predecessors, (689), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-20 05:53:36,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 751 transitions. [2021-11-20 05:53:36,692 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 751 transitions. Word has length 361 [2021-11-20 05:53:36,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:36,693 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 751 transitions. [2021-11-20 05:53:36,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:53:36,694 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 751 transitions. [2021-11-20 05:53:36,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-20 05:53:36,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:36,701 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:36,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:36,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 05:53:36,916 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 581056994, now seen corresponding path program 1 times [2021-11-20 05:53:36,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:36,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740147417] [2021-11-20 05:53:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:36,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:36,935 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:36,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143970990] [2021-11-20 05:53:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:36,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:36,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:36,937 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:36,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 05:53:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:37,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:53:37,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:53:38,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:53:38,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:38,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740147417] [2021-11-20 05:53:38,859 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:38,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143970990] [2021-11-20 05:53:38,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143970990] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:38,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:38,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-20 05:53:38,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826853538] [2021-11-20 05:53:38,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:38,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 05:53:38,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:38,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 05:53:38,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:53:38,865 INFO L87 Difference]: Start difference. First operand 603 states and 751 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:53:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:39,157 INFO L93 Difference]: Finished difference Result 1368 states and 1703 transitions. [2021-11-20 05:53:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:53:39,158 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 366 [2021-11-20 05:53:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:39,168 INFO L225 Difference]: With dead ends: 1368 [2021-11-20 05:53:39,169 INFO L226 Difference]: Without dead ends: 1335 [2021-11-20 05:53:39,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-11-20 05:53:39,171 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1877 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:39,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 2235 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-11-20 05:53:39,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1335. [2021-11-20 05:53:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1277 states have (on average 1.197337509788567) internal successors, (1529), 1289 states have internal predecessors, (1529), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-11-20 05:53:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1647 transitions. [2021-11-20 05:53:39,244 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1647 transitions. Word has length 366 [2021-11-20 05:53:39,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:39,245 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 1647 transitions. [2021-11-20 05:53:39,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:53:39,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1647 transitions. [2021-11-20 05:53:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2021-11-20 05:53:39,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:39,271 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:39,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:39,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 05:53:39,494 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:39,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1232682362, now seen corresponding path program 2 times [2021-11-20 05:53:39,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:39,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918977051] [2021-11-20 05:53:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:39,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:39,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:39,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485251306] [2021-11-20 05:53:39,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:53:39,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:39,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:39,556 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:39,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 05:53:39,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 05:53:39,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:39,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:39,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2021-11-20 05:53:41,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:41,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:41,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918977051] [2021-11-20 05:53:41,534 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:41,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485251306] [2021-11-20 05:53:41,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485251306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:41,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:41,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:53:41,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850669350] [2021-11-20 05:53:41,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:41,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:41,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:41,541 INFO L87 Difference]: Start difference. First operand 1335 states and 1647 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:53:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:41,617 INFO L93 Difference]: Finished difference Result 1361 states and 1693 transitions. [2021-11-20 05:53:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:53:41,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 774 [2021-11-20 05:53:41,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:41,637 INFO L225 Difference]: With dead ends: 1361 [2021-11-20 05:53:41,637 INFO L226 Difference]: Without dead ends: 1360 [2021-11-20 05:53:41,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:41,638 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 109 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:41,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 570 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:41,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2021-11-20 05:53:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1337. [2021-11-20 05:53:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1279 states have (on average 1.1970289288506646) internal successors, (1531), 1291 states have internal predecessors, (1531), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-11-20 05:53:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1649 transitions. [2021-11-20 05:53:41,703 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1649 transitions. Word has length 774 [2021-11-20 05:53:41,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:41,704 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 1649 transitions. [2021-11-20 05:53:41,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:53:41,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1649 transitions. [2021-11-20 05:53:41,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2021-11-20 05:53:41,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:41,749 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:41,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:41,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 05:53:41,974 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:41,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash 441553223, now seen corresponding path program 1 times [2021-11-20 05:53:41,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:41,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113210449] [2021-11-20 05:53:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:41,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:42,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:42,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996669536] [2021-11-20 05:53:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:42,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:42,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:42,004 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:42,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 05:53:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:42,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 2159 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 05:53:42,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:53:44,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:53:45,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:45,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113210449] [2021-11-20 05:53:45,744 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:45,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996669536] [2021-11-20 05:53:45,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996669536] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:45,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:45,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-11-20 05:53:45,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448392799] [2021-11-20 05:53:45,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:45,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 05:53:45,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 05:53:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-20 05:53:45,748 INFO L87 Difference]: Start difference. First operand 1337 states and 1649 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:53:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:46,202 INFO L93 Difference]: Finished difference Result 1921 states and 2378 transitions. [2021-11-20 05:53:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 05:53:46,203 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 775 [2021-11-20 05:53:46,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:46,220 INFO L225 Difference]: With dead ends: 1921 [2021-11-20 05:53:46,220 INFO L226 Difference]: Without dead ends: 1886 [2021-11-20 05:53:46,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1528 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-11-20 05:53:46,223 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 2443 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2495 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:46,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2495 Valid, 3672 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:53:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-11-20 05:53:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1886. [2021-11-20 05:53:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1810 states have (on average 1.1939226519337016) internal successors, (2161), 1822 states have internal predecessors, (2161), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-11-20 05:53:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2321 transitions. [2021-11-20 05:53:46,301 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2321 transitions. Word has length 775 [2021-11-20 05:53:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:46,303 INFO L470 AbstractCegarLoop]: Abstraction has 1886 states and 2321 transitions. [2021-11-20 05:53:46,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:53:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2321 transitions. [2021-11-20 05:53:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2021-11-20 05:53:46,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:46,320 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:46,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:46,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 05:53:46,546 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:46,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:46,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1963705612, now seen corresponding path program 2 times [2021-11-20 05:53:46,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:46,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35878894] [2021-11-20 05:53:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:46,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:46,585 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:46,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556295793] [2021-11-20 05:53:46,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:53:46,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:46,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:46,587 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:46,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 05:53:46,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 05:53:46,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:46,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:46,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:53:49,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:49,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:49,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35878894] [2021-11-20 05:53:49,022 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:49,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556295793] [2021-11-20 05:53:49,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556295793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:49,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:49,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:53:49,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970828514] [2021-11-20 05:53:49,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:49,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:49,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:49,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:49,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:49,025 INFO L87 Difference]: Start difference. First operand 1886 states and 2321 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:53:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:49,125 INFO L93 Difference]: Finished difference Result 1886 states and 2321 transitions. [2021-11-20 05:53:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:49,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1081 [2021-11-20 05:53:49,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:49,144 INFO L225 Difference]: With dead ends: 1886 [2021-11-20 05:53:49,145 INFO L226 Difference]: Without dead ends: 1885 [2021-11-20 05:53:49,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:49,147 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:49,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 478 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2021-11-20 05:53:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1885. [2021-11-20 05:53:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1810 states have (on average 1.1933701657458564) internal successors, (2160), 1821 states have internal predecessors, (2160), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-11-20 05:53:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2320 transitions. [2021-11-20 05:53:49,233 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2320 transitions. Word has length 1081 [2021-11-20 05:53:49,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:49,234 INFO L470 AbstractCegarLoop]: Abstraction has 1885 states and 2320 transitions. [2021-11-20 05:53:49,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:53:49,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2320 transitions. [2021-11-20 05:53:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2021-11-20 05:53:49,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:49,253 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:49,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:49,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:49,469 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1708047769, now seen corresponding path program 1 times [2021-11-20 05:53:49,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:49,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114640958] [2021-11-20 05:53:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:49,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:49,521 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:49,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217410488] [2021-11-20 05:53:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:49,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:49,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:49,523 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:49,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 05:53:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:50,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:53:50,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:53:52,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:53:54,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:54,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114640958] [2021-11-20 05:53:54,426 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:53:54,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217410488] [2021-11-20 05:53:54,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217410488] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:54,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:54,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-11-20 05:53:54,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424664393] [2021-11-20 05:53:54,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:54,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:53:54,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:53:54,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:53:54,430 INFO L87 Difference]: Start difference. First operand 1885 states and 2320 transitions. Second operand has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 05:53:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:54,789 INFO L93 Difference]: Finished difference Result 1977 states and 2471 transitions. [2021-11-20 05:53:54,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:53:54,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1092 [2021-11-20 05:53:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:54,803 INFO L225 Difference]: With dead ends: 1977 [2021-11-20 05:53:54,803 INFO L226 Difference]: Without dead ends: 1976 [2021-11-20 05:53:54,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2189 GetRequests, 2174 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:53:54,805 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 652 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:54,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 1089 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:53:54,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-11-20 05:53:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1975. [2021-11-20 05:53:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1867 states have (on average 1.203535083020889) internal successors, (2247), 1908 states have internal predecessors, (2247), 100 states have call successors, (100), 6 states have call predecessors, (100), 7 states have return successors, (120), 64 states have call predecessors, (120), 100 states have call successors, (120) [2021-11-20 05:53:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2467 transitions. [2021-11-20 05:53:54,892 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2467 transitions. Word has length 1092 [2021-11-20 05:53:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:54,894 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 2467 transitions. [2021-11-20 05:53:54,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 05:53:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2467 transitions. [2021-11-20 05:53:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2021-11-20 05:53:54,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:54,911 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:54,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:55,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:55,127 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:53:55,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:55,127 INFO L85 PathProgramCache]: Analyzing trace with hash -412829695, now seen corresponding path program 2 times [2021-11-20 05:53:55,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:55,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182874347] [2021-11-20 05:53:55,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:55,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:55,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:53:55,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402226430] [2021-11-20 05:53:55,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:53:55,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:55,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:55,176 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:55,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 05:53:55,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:53:55,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:55,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:53:55,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:53:57,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4984 trivial. 0 not checked. [2021-11-20 05:54:00,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:00,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182874347] [2021-11-20 05:54:00,185 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:54:00,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402226430] [2021-11-20 05:54:00,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402226430] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:00,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:00,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-11-20 05:54:00,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818792054] [2021-11-20 05:54:00,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:00,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 05:54:00,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 05:54:00,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-20 05:54:00,190 INFO L87 Difference]: Start difference. First operand 1975 states and 2467 transitions. Second operand has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-20 05:54:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:01,241 INFO L93 Difference]: Finished difference Result 2157 states and 2768 transitions. [2021-11-20 05:54:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 05:54:01,242 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 1128 [2021-11-20 05:54:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:01,258 INFO L225 Difference]: With dead ends: 2157 [2021-11-20 05:54:01,259 INFO L226 Difference]: Without dead ends: 2156 [2021-11-20 05:54:01,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2273 GetRequests, 2234 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 05:54:01,262 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1746 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:01,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1756 Valid, 1024 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 05:54:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-11-20 05:54:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2155. [2021-11-20 05:54:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1981 states have (on average 1.2221100454316003) internal successors, (2421), 2082 states have internal predecessors, (2421), 160 states have call successors, (160), 12 states have call predecessors, (160), 13 states have return successors, (180), 70 states have call predecessors, (180), 160 states have call successors, (180) [2021-11-20 05:54:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2761 transitions. [2021-11-20 05:54:01,364 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2761 transitions. Word has length 1128 [2021-11-20 05:54:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:01,366 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2761 transitions. [2021-11-20 05:54:01,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-20 05:54:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2761 transitions. [2021-11-20 05:54:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2021-11-20 05:54:01,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:01,407 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:01,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:01,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-20 05:54:01,622 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:54:01,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:01,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1412788433, now seen corresponding path program 3 times [2021-11-20 05:54:01,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:01,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513309996] [2021-11-20 05:54:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:01,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:01,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:54:01,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223172300] [2021-11-20 05:54:01,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:54:01,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:01,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:01,676 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:01,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-20 05:54:02,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 05:54:02,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:54:02,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:54:02,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5520 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2021-11-20 05:54:03,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:54:03,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513309996] [2021-11-20 05:54:03,641 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:54:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223172300] [2021-11-20 05:54:03,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223172300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:03,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:03,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:54:03,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108470164] [2021-11-20 05:54:03,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:03,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:54:03,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:03,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:54:03,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:54:03,645 INFO L87 Difference]: Start difference. First operand 2155 states and 2761 transitions. Second operand has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:54:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:03,830 INFO L93 Difference]: Finished difference Result 2472 states and 3248 transitions. [2021-11-20 05:54:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:54:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1200 [2021-11-20 05:54:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:03,847 INFO L225 Difference]: With dead ends: 2472 [2021-11-20 05:54:03,847 INFO L226 Difference]: Without dead ends: 2471 [2021-11-20 05:54:03,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:54:03,850 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 249 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:03,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 563 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:54:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-11-20 05:54:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2398. [2021-11-20 05:54:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2152 states have (on average 1.246282527881041) internal successors, (2682), 2307 states have internal predecessors, (2682), 223 states have call successors, (223), 21 states have call predecessors, (223), 22 states have return successors, (243), 79 states have call predecessors, (243), 223 states have call successors, (243) [2021-11-20 05:54:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3148 transitions. [2021-11-20 05:54:03,981 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3148 transitions. Word has length 1200 [2021-11-20 05:54:03,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:03,982 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 3148 transitions. [2021-11-20 05:54:03,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:54:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3148 transitions. [2021-11-20 05:54:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2021-11-20 05:54:04,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:04,010 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:04,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-20 05:54:04,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:04,211 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:54:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:04,211 INFO L85 PathProgramCache]: Analyzing trace with hash -54767608, now seen corresponding path program 1 times [2021-11-20 05:54:04,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:04,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046485941] [2021-11-20 05:54:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:04,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:04,258 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:54:04,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235304021] [2021-11-20 05:54:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:04,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:04,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:04,260 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:04,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-20 05:54:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:04,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 3270 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 05:54:04,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:54:07,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked. [2021-11-20 05:54:09,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:09,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046485941] [2021-11-20 05:54:09,951 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:54:09,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235304021] [2021-11-20 05:54:09,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235304021] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:09,951 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:09,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-11-20 05:54:09,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355468007] [2021-11-20 05:54:09,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:09,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 05:54:09,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:09,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 05:54:09,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 05:54:09,956 INFO L87 Difference]: Start difference. First operand 2398 states and 3148 transitions. Second operand has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-11-20 05:54:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:13,095 INFO L93 Difference]: Finished difference Result 3115 states and 4316 transitions. [2021-11-20 05:54:13,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-20 05:54:13,096 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 1201 [2021-11-20 05:54:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:13,116 INFO L225 Difference]: With dead ends: 3115 [2021-11-20 05:54:13,116 INFO L226 Difference]: Without dead ends: 3114 [2021-11-20 05:54:13,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2443 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-11-20 05:54:13,121 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 4137 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 1893 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4147 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1893 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:13,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4147 Valid, 1615 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1893 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 05:54:13,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-11-20 05:54:13,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3094. [2021-11-20 05:54:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 2608 states have (on average 1.2952453987730062) internal successors, (3378), 2967 states have internal predecessors, (3378), 439 states have call successors, (439), 45 states have call predecessors, (439), 46 states have return successors, (459), 103 states have call predecessors, (459), 439 states have call successors, (459) [2021-11-20 05:54:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 4276 transitions. [2021-11-20 05:54:13,331 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 4276 transitions. Word has length 1201 [2021-11-20 05:54:13,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:13,333 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 4276 transitions. [2021-11-20 05:54:13,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-11-20 05:54:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 4276 transitions. [2021-11-20 05:54:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2021-11-20 05:54:13,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:13,360 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:13,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:13,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:13,575 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:54:13,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash 432013928, now seen corresponding path program 2 times [2021-11-20 05:54:13,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:13,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951052324] [2021-11-20 05:54:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:13,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:13,627 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:54:13,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262209049] [2021-11-20 05:54:13,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:54:13,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:13,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:13,629 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:13,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-20 05:54:14,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:54:14,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:54:14,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 3702 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-20 05:54:14,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:54:17,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 5884 trivial. 0 not checked. [2021-11-20 05:54:21,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:21,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951052324] [2021-11-20 05:54:21,445 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:54:21,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262209049] [2021-11-20 05:54:21,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262209049] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:21,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:21,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-11-20 05:54:21,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713204816] [2021-11-20 05:54:21,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:21,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-20 05:54:21,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-20 05:54:21,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-20 05:54:21,453 INFO L87 Difference]: Start difference. First operand 3094 states and 4276 transitions. Second operand has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-11-20 05:54:30,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:30,031 INFO L93 Difference]: Finished difference Result 4507 states and 6584 transitions. [2021-11-20 05:54:30,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-11-20 05:54:30,032 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) Word has length 1345 [2021-11-20 05:54:30,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:30,063 INFO L225 Difference]: With dead ends: 4507 [2021-11-20 05:54:30,063 INFO L226 Difference]: Without dead ends: 4506 [2021-11-20 05:54:30,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2779 GetRequests, 2596 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-11-20 05:54:30,076 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 7757 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 4988 mSolverCounterSat, 4009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7767 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 8997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4009 IncrementalHoareTripleChecker+Valid, 4988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:30,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7767 Valid, 2087 Invalid, 8997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4009 Valid, 4988 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 05:54:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-11-20 05:54:30,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4486. [2021-11-20 05:54:30,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 3520 states have (on average 1.3551136363636365) internal successors, (4770), 4287 states have internal predecessors, (4770), 871 states have call successors, (871), 93 states have call predecessors, (871), 94 states have return successors, (891), 151 states have call predecessors, (891), 871 states have call successors, (891) [2021-11-20 05:54:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 6532 transitions. [2021-11-20 05:54:30,344 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 6532 transitions. Word has length 1345 [2021-11-20 05:54:30,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:30,345 INFO L470 AbstractCegarLoop]: Abstraction has 4486 states and 6532 transitions. [2021-11-20 05:54:30,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-11-20 05:54:30,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 6532 transitions. [2021-11-20 05:54:30,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1634 [2021-11-20 05:54:30,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:30,419 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:30,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:30,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-20 05:54:30,646 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:54:30,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash -85776600, now seen corresponding path program 3 times [2021-11-20 05:54:30,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:30,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969516214] [2021-11-20 05:54:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:30,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:30,684 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:54:30,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59006699] [2021-11-20 05:54:30,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:54:30,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:30,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:30,690 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:30,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-20 05:54:31,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 05:54:31,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:54:31,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:54:31,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 17427 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 16975 trivial. 0 not checked. [2021-11-20 05:54:33,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:54:33,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:33,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969516214] [2021-11-20 05:54:33,134 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:54:33,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59006699] [2021-11-20 05:54:33,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59006699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:33,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:33,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:54:33,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027278777] [2021-11-20 05:54:33,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:33,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:54:33,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:33,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:54:33,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:54:33,139 INFO L87 Difference]: Start difference. First operand 4486 states and 6532 transitions. Second operand has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:54:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:33,652 INFO L93 Difference]: Finished difference Result 7361 states and 11018 transitions. [2021-11-20 05:54:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:54:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1633 [2021-11-20 05:54:33,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:33,701 INFO L225 Difference]: With dead ends: 7361 [2021-11-20 05:54:33,701 INFO L226 Difference]: Without dead ends: 7360 [2021-11-20 05:54:33,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1632 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:54:33,709 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 282 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:33,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 716 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:54:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2021-11-20 05:54:34,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 6897. [2021-11-20 05:54:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6897 states, 5227 states have (on average 1.411325808303042) internal successors, (7377), 6519 states have internal predecessors, (7377), 1486 states have call successors, (1486), 182 states have call predecessors, (1486), 183 states have return successors, (1506), 240 states have call predecessors, (1506), 1486 states have call successors, (1506) [2021-11-20 05:54:34,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6897 states to 6897 states and 10369 transitions. [2021-11-20 05:54:34,197 INFO L78 Accepts]: Start accepts. Automaton has 6897 states and 10369 transitions. Word has length 1633 [2021-11-20 05:54:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:34,199 INFO L470 AbstractCegarLoop]: Abstraction has 6897 states and 10369 transitions. [2021-11-20 05:54:34,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:54:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6897 states and 10369 transitions. [2021-11-20 05:54:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2021-11-20 05:54:34,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:34,248 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:34,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:34,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-20 05:54:34,462 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:54:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1486421430, now seen corresponding path program 1 times [2021-11-20 05:54:34,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:34,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859305030] [2021-11-20 05:54:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:34,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:34,504 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:54:34,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491583530] [2021-11-20 05:54:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:34,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:34,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:34,505 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:34,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-20 05:54:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:35,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 4570 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-20 05:54:35,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:54:40,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 9100 trivial. 0 not checked. [2021-11-20 05:54:49,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:49,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859305030] [2021-11-20 05:54:49,228 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:54:49,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491583530] [2021-11-20 05:54:49,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491583530] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:49,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:49,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-11-20 05:54:49,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305751207] [2021-11-20 05:54:49,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:49,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-20 05:54:49,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-20 05:54:49,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-11-20 05:54:49,247 INFO L87 Difference]: Start difference. First operand 6897 states and 10369 transitions. Second operand has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-11-20 05:55:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:26,218 INFO L93 Difference]: Finished difference Result 12329 states and 19133 transitions. [2021-11-20 05:55:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-11-20 05:55:26,219 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) Word has length 1635 [2021-11-20 05:55:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:26,267 INFO L225 Difference]: With dead ends: 12329 [2021-11-20 05:55:26,267 INFO L226 Difference]: Without dead ends: 12328 [2021-11-20 05:55:26,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3455 GetRequests, 3080 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-11-20 05:55:26,288 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 20264 mSDsluCounter, 4529 mSDsCounter, 0 mSdLazyCounter, 11242 mSolverCounterSat, 11996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20274 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 23238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11996 IncrementalHoareTripleChecker+Valid, 11242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:26,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20274 Valid, 4785 Invalid, 23238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11996 Valid, 11242 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-11-20 05:55:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2021-11-20 05:55:27,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 12273. [2021-11-20 05:55:27,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12273 states, 8875 states have (on average 1.4585915492957746) internal successors, (12945), 11559 states have internal predecessors, (12945), 3022 states have call successors, (3022), 374 states have call predecessors, (3022), 375 states have return successors, (3042), 432 states have call predecessors, (3042), 3022 states have call successors, (3042) [2021-11-20 05:55:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12273 states to 12273 states and 19009 transitions. [2021-11-20 05:55:27,272 INFO L78 Accepts]: Start accepts. Automaton has 12273 states and 19009 transitions. Word has length 1635 [2021-11-20 05:55:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:27,274 INFO L470 AbstractCegarLoop]: Abstraction has 12273 states and 19009 transitions. [2021-11-20 05:55:27,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-11-20 05:55:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12273 states and 19009 transitions. [2021-11-20 05:55:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2212 [2021-11-20 05:55:27,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:27,351 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:55:27,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-20 05:55:27,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-20 05:55:27,566 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:55:27,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash -920525002, now seen corresponding path program 2 times [2021-11-20 05:55:27,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:55:27,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070241833] [2021-11-20 05:55:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:27,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:55:27,640 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:55:27,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820622706] [2021-11-20 05:55:27,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:55:27,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:55:27,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:55:27,642 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:55:27,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-20 05:55:28,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:55:28,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:55:28,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 6298 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-20 05:55:28,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:55:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:55:42,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 22444 trivial. 0 not checked. [2021-11-20 05:56:09,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:09,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070241833] [2021-11-20 05:56:09,277 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:56:09,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820622706] [2021-11-20 05:56:09,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820622706] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:09,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:09,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-11-20 05:56:09,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59709844] [2021-11-20 05:56:09,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:09,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-20 05:56:09,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:09,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-20 05:56:09,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-11-20 05:56:09,295 INFO L87 Difference]: Start difference. First operand 12273 states and 19009 transitions. Second operand has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-11-20 06:00:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:00:35,726 INFO L93 Difference]: Finished difference Result 23081 states and 36461 transitions. [2021-11-20 06:00:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-11-20 06:00:35,727 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) Word has length 2211 [2021-11-20 06:00:35,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:00:35,825 INFO L225 Difference]: With dead ends: 23081 [2021-11-20 06:00:35,825 INFO L226 Difference]: Without dead ends: 23080 [2021-11-20 06:00:35,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4799 GetRequests, 4040 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 76.2s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-11-20 06:00:35,881 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 47297 mSDsluCounter, 6329 mSDsCounter, 0 mSdLazyCounter, 26328 mSolverCounterSat, 27934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47307 SdHoareTripleChecker+Valid, 6585 SdHoareTripleChecker+Invalid, 54262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 27934 IncrementalHoareTripleChecker+Valid, 26328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:00:35,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47307 Valid, 6585 Invalid, 54262 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [27934 Valid, 26328 Invalid, 0 Unknown, 0 Unchecked, 21.2s Time] [2021-11-20 06:00:35,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23080 states. [2021-11-20 06:00:37,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23080 to 23025. [2021-11-20 06:00:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23025 states, 16171 states have (on average 1.4891472388844227) internal successors, (24081), 21639 states have internal predecessors, (24081), 6094 states have call successors, (6094), 758 states have call predecessors, (6094), 759 states have return successors, (6114), 816 states have call predecessors, (6114), 6094 states have call successors, (6114) [2021-11-20 06:00:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23025 states to 23025 states and 36289 transitions. [2021-11-20 06:00:37,649 INFO L78 Accepts]: Start accepts. Automaton has 23025 states and 36289 transitions. Word has length 2211 [2021-11-20 06:00:37,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:00:37,652 INFO L470 AbstractCegarLoop]: Abstraction has 23025 states and 36289 transitions. [2021-11-20 06:00:37,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-11-20 06:00:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 23025 states and 36289 transitions. [2021-11-20 06:00:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3364 [2021-11-20 06:00:37,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:00:37,768 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:00:37,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-20 06:00:37,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-20 06:00:37,969 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 06:00:37,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:00:37,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1796228554, now seen corresponding path program 3 times [2021-11-20 06:00:37,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:00:37,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523344429] [2021-11-20 06:00:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:00:37,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:00:38,030 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:00:38,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93654460] [2021-11-20 06:00:38,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:00:38,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:00:38,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:00:38,031 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:00:38,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-20 06:00:38,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 06:00:38,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:00:38,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:00:38,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:00:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 220424 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 218531 trivial. 0 not checked. [2021-11-20 06:00:42,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:00:42,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:00:42,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523344429] [2021-11-20 06:00:42,998 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:00:42,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93654460] [2021-11-20 06:00:42,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93654460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:00:42,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:00:42,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:00:42,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140206637] [2021-11-20 06:00:43,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:00:43,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:00:43,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:00:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:00:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:00:43,002 INFO L87 Difference]: Start difference. First operand 23025 states and 36289 transitions. Second operand has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:00:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:00:45,174 INFO L93 Difference]: Finished difference Result 45979 states and 72022 transitions. [2021-11-20 06:00:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:00:45,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 3363 [2021-11-20 06:00:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:00:45,339 INFO L225 Difference]: With dead ends: 45979 [2021-11-20 06:00:45,339 INFO L226 Difference]: Without dead ends: 45978 [2021-11-20 06:00:45,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3371 GetRequests, 3362 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:00:45,365 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 282 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:00:45,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 713 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:00:45,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45978 states. [2021-11-20 06:00:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45978 to 37513. [2021-11-20 06:00:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37513 states, 26909 states have (on average 1.5039206213534506) internal successors, (40469), 34996 states have internal predecessors, (40469), 9278 states have call successors, (9278), 1324 states have call predecessors, (9278), 1325 states have return successors, (9298), 1381 states have call predecessors, (9298), 9278 states have call successors, (9298) [2021-11-20 06:00:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37513 states to 37513 states and 59045 transitions. [2021-11-20 06:00:47,860 INFO L78 Accepts]: Start accepts. Automaton has 37513 states and 59045 transitions. Word has length 3363 [2021-11-20 06:00:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:00:47,863 INFO L470 AbstractCegarLoop]: Abstraction has 37513 states and 59045 transitions. [2021-11-20 06:00:47,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:00:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand 37513 states and 59045 transitions. [2021-11-20 06:00:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3365 [2021-11-20 06:00:48,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:00:48,238 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:00:48,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-11-20 06:00:48,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-20 06:00:48,440 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 06:00:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:00:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash -626412579, now seen corresponding path program 1 times [2021-11-20 06:00:48,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:00:48,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412147856] [2021-11-20 06:00:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:00:48,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:00:48,504 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:00:48,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332457843] [2021-11-20 06:00:48,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:00:48,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:00:48,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:00:48,505 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:00:48,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_427ae747-da10-4f06-ad6e-6faf698e0ee3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-20 06:00:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:00:50,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 9757 conjuncts, 383 conjunts are in the unsatisfiable core [2021-11-20 06:00:50,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:01:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 06:01:31,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:03:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 143831 refuted. 0 times theorem prover too weak. 76024 trivial. 0 not checked. [2021-11-20 06:03:14,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:03:14,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412147856] [2021-11-20 06:03:14,062 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:03:14,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332457843] [2021-11-20 06:03:14,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332457843] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:03:14,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:03:14,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765 [2021-11-20 06:03:14,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749059701] [2021-11-20 06:03:14,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:03:14,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-11-20 06:03:14,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:03:14,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-11-20 06:03:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-11-20 06:03:14,128 INFO L87 Difference]: Start difference. First operand 37513 states and 59045 transitions. Second operand has 766 states, 765 states have (on average 4.580392156862745) internal successors, (3504), 766 states have internal predecessors, (3504), 380 states have call successors, (386), 191 states have call predecessors, (386), 191 states have return successors, (386), 380 states have call predecessors, (386), 380 states have call successors, (386)