./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.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_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/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_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/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_bb3656f2-b3a6-4267-96da-20fa42ec88b3/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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:11:10,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:11:10,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:11:10,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:11:10,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:11:10,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:11:10,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:11:10,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:11:10,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:11:10,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:11:10,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:11:10,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:11:10,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:11:10,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:11:10,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:11:10,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:11:10,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:11:10,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:11:10,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:11:10,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:11:10,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:11:10,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:11:10,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:11:10,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:11:10,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:11:10,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:11:10,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:11:10,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:11:10,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:11:10,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:11:10,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:11:10,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:11:10,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:11:10,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:11:10,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:11:10,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:11:10,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:11:10,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:11:10,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:11:10,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:11:10,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:11:10,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-20 07:11:10,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:11:10,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:11:10,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:11:10,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:11:10,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:11:10,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:11:10,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:11:10,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:11:10,121 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:11:10,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:11:10,121 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:11:10,122 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:11:10,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:11:10,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:11:10,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:11:10,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:11:10,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:11:10,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:11:10,123 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 07:11:10,123 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:11:10,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:11:10,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:11:10,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:11:10,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:11:10,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:11:10,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:11:10,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:11:10,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:11:10,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:11:10,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:11:10,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:11:10,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:11:10,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:11:10,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:11:10,126 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_bb3656f2-b3a6-4267-96da-20fa42ec88b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2021-11-20 07:11:10,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:11:10,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:11:10,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:11:10,392 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:11:10,401 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:11:10,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-20 07:11:10,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/data/a4b86cfea/946fbf5f92a0438280acd24445bb56d9/FLAGc1e8a65be [2021-11-20 07:11:11,128 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:11:11,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-11-20 07:11:11,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/data/a4b86cfea/946fbf5f92a0438280acd24445bb56d9/FLAGc1e8a65be [2021-11-20 07:11:11,341 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/data/a4b86cfea/946fbf5f92a0438280acd24445bb56d9 [2021-11-20 07:11:11,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:11:11,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:11:11,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:11:11,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:11:11,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:11:11,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:11:11" (1/1) ... [2021-11-20 07:11:11,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3e377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:11, skipping insertion in model container [2021-11-20 07:11:11,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:11:11" (1/1) ... [2021-11-20 07:11:11,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:11:11,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:11:11,869 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_bb3656f2-b3a6-4267-96da-20fa42ec88b3/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-20 07:11:11,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:11:11,999 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:11:12,029 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_bb3656f2-b3a6-4267-96da-20fa42ec88b3/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-11-20 07:11:12,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:11:12,234 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:11:12,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12 WrapperNode [2021-11-20 07:11:12,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:11:12,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:11:12,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:11:12,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:11:12,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (1/1) ... [2021-11-20 07:11:12,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (1/1) ... [2021-11-20 07:11:12,424 INFO L137 Inliner]: procedures = 177, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1159 [2021-11-20 07:11:12,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:11:12,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:11:12,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:11:12,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:11:12,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (1/1) ... [2021-11-20 07:11:12,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (1/1) ... [2021-11-20 07:11:12,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (1/1) ... [2021-11-20 07:11:12,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (1/1) ... [2021-11-20 07:11:12,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (1/1) ... [2021-11-20 07:11:12,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (1/1) ... [2021-11-20 07:11:12,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (1/1) ... [2021-11-20 07:11:12,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:11:12,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:11:12,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:11:12,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:11:12,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (1/1) ... [2021-11-20 07:11:12,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:11:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:12,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:11:12,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:11:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:11:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 07:11:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 07:11:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:11:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 07:11:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 07:11:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:11:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:11:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:11:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:11:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:11:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:11:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:11:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:11:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:11:13,023 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:11:13,025 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:11:14,202 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:11:14,214 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:11:14,214 INFO L301 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-20 07:11:14,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:11:14 BoogieIcfgContainer [2021-11-20 07:11:14,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:11:14,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:11:14,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:11:14,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:11:14,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:11:11" (1/3) ... [2021-11-20 07:11:14,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312742be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:11:14, skipping insertion in model container [2021-11-20 07:11:14,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:12" (2/3) ... [2021-11-20 07:11:14,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312742be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:11:14, skipping insertion in model container [2021-11-20 07:11:14,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:11:14" (3/3) ... [2021-11-20 07:11:14,234 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2021-11-20 07:11:14,243 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:11:14,243 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-20 07:11:14,299 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:11:14,305 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 07:11:14,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-20 07:11:14,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 196 states have (on average 1.6887755102040816) internal successors, (331), 212 states have internal predecessors, (331), 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 07:11:14,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 07:11:14,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:14,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 07:11:14,339 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 07:11:14,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:14,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2021-11-20 07:11:14,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:14,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173366071] [2021-11-20 07:11:14,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:14,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:14,539 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 07:11:14,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:14,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173366071] [2021-11-20 07:11:14,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173366071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:14,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:14,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:11:14,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520578584] [2021-11-20 07:11:14,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:14,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:11:14,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:14,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:11:14,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:11:14,592 INFO L87 Difference]: Start difference. First operand has 221 states, 196 states have (on average 1.6887755102040816) internal successors, (331), 212 states have internal predecessors, (331), 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 07:11:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:14,741 INFO L93 Difference]: Finished difference Result 615 states and 1033 transitions. [2021-11-20 07:11:14,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:11:14,743 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 07:11:14,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:14,757 INFO L225 Difference]: With dead ends: 615 [2021-11-20 07:11:14,757 INFO L226 Difference]: Without dead ends: 392 [2021-11-20 07:11:14,761 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 07:11:14,765 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 217 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:14,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 609 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:11:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-20 07:11:14,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2021-11-20 07:11:14,845 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 07:11:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2021-11-20 07:11:14,850 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 6 [2021-11-20 07:11:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:14,851 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2021-11-20 07:11:14,851 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 07:11:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2021-11-20 07:11:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 07:11:14,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:14,857 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 07:11:14,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:11:14,858 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 07:11:14,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:14,859 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2021-11-20 07:11:14,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:14,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804714001] [2021-11-20 07:11:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:14,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:14,897 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:14,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251880629] [2021-11-20 07:11:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:14,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:14,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:14,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:14,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:11:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:15,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:11:15,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:15,500 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 07:11:15,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:15,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:15,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804714001] [2021-11-20 07:11:15,502 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:15,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251880629] [2021-11-20 07:11:15,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251880629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:15,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:15,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:11:15,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567890575] [2021-11-20 07:11:15,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:15,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:11:15,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:15,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:11:15,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:11:15,520 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 07:11:15,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:15,631 INFO L93 Difference]: Finished difference Result 455 states and 613 transitions. [2021-11-20 07:11:15,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:11:15,632 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 07:11:15,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:15,639 INFO L225 Difference]: With dead ends: 455 [2021-11-20 07:11:15,639 INFO L226 Difference]: Without dead ends: 241 [2021-11-20 07:11:15,644 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 07:11:15,651 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 07:11:15,652 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 07:11:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-20 07:11:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-11-20 07:11:15,683 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 07:11:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-11-20 07:11:15,687 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 103 [2021-11-20 07:11:15,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:15,687 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-11-20 07:11:15,688 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 07:11:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-11-20 07:11:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 07:11:15,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:15,696 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 07:11:15,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:15,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:15,910 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 07:11:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:15,911 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2021-11-20 07:11:15,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:15,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794043506] [2021-11-20 07:11:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:15,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:15,935 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:15,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510366666] [2021-11-20 07:11:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:15,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:15,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:15,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:15,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:11:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:16,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:11:16,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:16,402 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 07:11:16,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:16,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:16,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794043506] [2021-11-20 07:11:16,403 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:16,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510366666] [2021-11-20 07:11:16,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510366666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:16,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:16,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:11:16,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366865262] [2021-11-20 07:11:16,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:16,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:11:16,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:11:16,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:11:16,406 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 07:11:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:16,509 INFO L93 Difference]: Finished difference Result 495 states and 653 transitions. [2021-11-20 07:11:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:11:16,509 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 07:11:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:16,512 INFO L225 Difference]: With dead ends: 495 [2021-11-20 07:11:16,512 INFO L226 Difference]: Without dead ends: 261 [2021-11-20 07:11:16,513 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 07:11:16,518 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 07:11:16,519 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 07:11:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-20 07:11:16,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-11-20 07:11:16,551 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 07:11:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2021-11-20 07:11:16,553 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 103 [2021-11-20 07:11:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:16,558 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2021-11-20 07:11:16,558 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 07:11:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2021-11-20 07:11:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 07:11:16,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:16,562 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 07:11:16,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:16,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-20 07:11:16,790 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 07:11:16,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:16,790 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2021-11-20 07:11:16,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:16,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916901752] [2021-11-20 07:11:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:16,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:16,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:16,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469350677] [2021-11-20 07:11:16,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:16,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:16,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:16,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:16,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:11:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:17,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:11:17,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:17,276 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 07:11:17,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:17,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:17,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916901752] [2021-11-20 07:11:17,277 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:17,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469350677] [2021-11-20 07:11:17,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469350677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:17,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:17,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:11:17,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769993314] [2021-11-20 07:11:17,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:17,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:11:17,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:17,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:11:17,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:11:17,282 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 07:11:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:17,354 INFO L93 Difference]: Finished difference Result 505 states and 653 transitions. [2021-11-20 07:11:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:11:17,356 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 07:11:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:17,358 INFO L225 Difference]: With dead ends: 505 [2021-11-20 07:11:17,358 INFO L226 Difference]: Without dead ends: 251 [2021-11-20 07:11:17,359 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 07:11:17,360 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 07:11:17,361 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 07:11:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-20 07:11:17,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2021-11-20 07:11:17,371 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 07:11:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2021-11-20 07:11:17,373 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 103 [2021-11-20 07:11:17,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:17,373 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2021-11-20 07:11:17,374 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 07:11:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2021-11-20 07:11:17,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 07:11:17,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:17,376 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 07:11:17,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:17,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:17,598 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 07:11:17,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:17,599 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2021-11-20 07:11:17,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:17,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919420594] [2021-11-20 07:11:17,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:17,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:17,623 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:17,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368680191] [2021-11-20 07:11:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:17,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:17,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:17,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:17,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:11:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:17,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:11:17,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:17,996 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 07:11:17,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:17,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919420594] [2021-11-20 07:11:17,997 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368680191] [2021-11-20 07:11:17,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368680191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:17,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:17,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:11:17,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148305377] [2021-11-20 07:11:17,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:17,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:11:18,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:18,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:11:18,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:11:18,001 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 07:11:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:18,104 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2021-11-20 07:11:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:11:18,105 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 07:11:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:18,109 INFO L225 Difference]: With dead ends: 566 [2021-11-20 07:11:18,109 INFO L226 Difference]: Without dead ends: 326 [2021-11-20 07:11:18,110 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 07:11:18,111 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 07:11:18,112 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 07:11:18,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-20 07:11:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2021-11-20 07:11:18,127 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 07:11:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 292 transitions. [2021-11-20 07:11:18,131 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 292 transitions. Word has length 103 [2021-11-20 07:11:18,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:18,133 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 292 transitions. [2021-11-20 07:11:18,134 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 07:11:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 292 transitions. [2021-11-20 07:11:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 07:11:18,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:18,136 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 07:11:18,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:18,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:18,354 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 07:11:18,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2021-11-20 07:11:18,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:18,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047644004] [2021-11-20 07:11:18,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:18,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:18,370 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:18,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807371659] [2021-11-20 07:11:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:18,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:18,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:18,374 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:18,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:11:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:18,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:11:18,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:18,797 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 07:11:18,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:18,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:18,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047644004] [2021-11-20 07:11:18,798 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:18,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807371659] [2021-11-20 07:11:18,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807371659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:18,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:18,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:11:18,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614507952] [2021-11-20 07:11:18,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:18,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:11:18,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:18,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:11:18,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:11:18,800 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 07:11:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:18,850 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2021-11-20 07:11:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:11:18,851 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 07:11:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:18,855 INFO L225 Difference]: With dead ends: 416 [2021-11-20 07:11:18,856 INFO L226 Difference]: Without dead ends: 415 [2021-11-20 07:11:18,856 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 07:11:18,859 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 105 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 871 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 07:11:18,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 871 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:11:18,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-20 07:11:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2021-11-20 07:11:18,882 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 07:11:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 513 transitions. [2021-11-20 07:11:18,885 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 513 transitions. Word has length 103 [2021-11-20 07:11:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:18,886 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 513 transitions. [2021-11-20 07:11:18,887 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 07:11:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 513 transitions. [2021-11-20 07:11:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-20 07:11:18,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:18,890 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 07:11:18,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:19,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 07:11:19,114 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 07:11:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2021-11-20 07:11:19,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:19,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444547056] [2021-11-20 07:11:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:19,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:19,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:19,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810329152] [2021-11-20 07:11:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:19,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:19,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:19,134 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:19,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:11:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:11:19,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:19,544 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 07:11:19,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:19,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:19,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444547056] [2021-11-20 07:11:19,545 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:19,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810329152] [2021-11-20 07:11:19,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810329152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:19,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:19,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:11:19,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103034857] [2021-11-20 07:11:19,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:19,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:11:19,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:19,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:11:19,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:11:19,548 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 07:11:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:19,627 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2021-11-20 07:11:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:11:19,627 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 07:11:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:19,631 INFO L225 Difference]: With dead ends: 413 [2021-11-20 07:11:19,631 INFO L226 Difference]: Without dead ends: 412 [2021-11-20 07:11:19,631 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 07:11:19,632 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:19,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 553 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-20 07:11:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-11-20 07:11:19,653 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 07:11:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 512 transitions. [2021-11-20 07:11:19,656 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 512 transitions. Word has length 104 [2021-11-20 07:11:19,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:19,656 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 512 transitions. [2021-11-20 07:11:19,656 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 07:11:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 512 transitions. [2021-11-20 07:11:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 07:11:19,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:19,658 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 07:11:19,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:19,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 07:11:19,886 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 07:11:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:19,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1365413568, now seen corresponding path program 1 times [2021-11-20 07:11:19,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:19,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616894601] [2021-11-20 07:11:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:19,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:19,899 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:19,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702181381] [2021-11-20 07:11:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:19,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:19,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:19,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:19,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 07:11:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:20,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:11:20,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:20,373 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 07:11:20,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:20,687 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 07:11:20,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:20,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616894601] [2021-11-20 07:11:20,688 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702181381] [2021-11-20 07:11:20,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702181381] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:20,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:11:20,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-20 07:11:20,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528515451] [2021-11-20 07:11:20,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:20,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:11:20,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:20,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:11:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:11:20,691 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 07:11:20,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:20,816 INFO L93 Difference]: Finished difference Result 634 states and 796 transitions. [2021-11-20 07:11:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:11:20,817 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 07:11:20,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:20,821 INFO L225 Difference]: With dead ends: 634 [2021-11-20 07:11:20,821 INFO L226 Difference]: Without dead ends: 600 [2021-11-20 07:11:20,822 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 07:11:20,823 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 707 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1343 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 07:11:20,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 1343 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:20,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-11-20 07:11:20,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-11-20 07:11:20,846 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 07:11:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 741 transitions. [2021-11-20 07:11:20,851 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 741 transitions. Word has length 108 [2021-11-20 07:11:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:20,851 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 741 transitions. [2021-11-20 07:11:20,851 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 07:11:20,852 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 741 transitions. [2021-11-20 07:11:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 07:11:20,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:20,853 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 07:11:20,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:21,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:21,069 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 07:11:21,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2021-11-20 07:11:21,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:21,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4634727] [2021-11-20 07:11:21,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:21,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:21,084 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:21,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653484771] [2021-11-20 07:11:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:21,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:21,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:21,085 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:21,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 07:11:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:11:21,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:21,733 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 07:11:21,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:21,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:21,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4634727] [2021-11-20 07:11:21,734 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:21,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653484771] [2021-11-20 07:11:21,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653484771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:21,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:21,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:11:21,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113524775] [2021-11-20 07:11:21,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:21,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:11:21,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:21,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:11:21,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:11:21,737 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 07:11:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:21,790 INFO L93 Difference]: Finished difference Result 1051 states and 1305 transitions. [2021-11-20 07:11:21,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:11:21,792 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 07:11:21,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:21,796 INFO L225 Difference]: With dead ends: 1051 [2021-11-20 07:11:21,796 INFO L226 Difference]: Without dead ends: 598 [2021-11-20 07:11:21,797 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 07:11:21,798 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 07:11:21,799 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 07:11:21,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-20 07:11:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-20 07:11:21,822 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 07:11:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 738 transitions. [2021-11-20 07:11:21,826 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 738 transitions. Word has length 108 [2021-11-20 07:11:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:21,826 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 738 transitions. [2021-11-20 07:11:21,826 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 07:11:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 738 transitions. [2021-11-20 07:11:21,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 07:11:21,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:21,828 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 07:11:21,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:22,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:22,042 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 07:11:22,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:22,042 INFO L85 PathProgramCache]: Analyzing trace with hash -889816829, now seen corresponding path program 1 times [2021-11-20 07:11:22,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:22,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090650473] [2021-11-20 07:11:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:22,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:22,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:22,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497928985] [2021-11-20 07:11:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:22,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:22,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:22,059 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:22,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 07:11:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:11:22,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:22,558 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 07:11:22,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:22,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:22,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090650473] [2021-11-20 07:11:22,559 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:22,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497928985] [2021-11-20 07:11:22,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497928985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:22,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:22,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:11:22,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229548092] [2021-11-20 07:11:22,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:22,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:11:22,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:11:22,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:11:22,561 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 07:11:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:22,647 INFO L93 Difference]: Finished difference Result 1136 states and 1408 transitions. [2021-11-20 07:11:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:11:22,650 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 07:11:22,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:22,654 INFO L225 Difference]: With dead ends: 1136 [2021-11-20 07:11:22,654 INFO L226 Difference]: Without dead ends: 596 [2021-11-20 07:11:22,655 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 07:11:22,656 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:22,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 534 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:11:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-20 07:11:22,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-20 07:11:22,682 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 07:11:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 735 transitions. [2021-11-20 07:11:22,687 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 735 transitions. Word has length 123 [2021-11-20 07:11:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:22,687 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 735 transitions. [2021-11-20 07:11:22,687 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 07:11:22,688 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 735 transitions. [2021-11-20 07:11:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-20 07:11:22,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:22,690 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 07:11:22,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:22,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 07:11:22,906 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 07:11:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2124754754, now seen corresponding path program 1 times [2021-11-20 07:11:22,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:22,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349017241] [2021-11-20 07:11:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:22,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:22,927 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:22,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608058232] [2021-11-20 07:11:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:22,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:22,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:22,929 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:22,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 07:11:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:23,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:11:23,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:11:23,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:23,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349017241] [2021-11-20 07:11:23,561 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608058232] [2021-11-20 07:11:23,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608058232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:23,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:23,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:11:23,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761719008] [2021-11-20 07:11:23,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:23,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:11:23,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:11:23,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:11:23,564 INFO L87 Difference]: Start difference. First operand 596 states and 735 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 07:11:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:23,624 INFO L93 Difference]: Finished difference Result 1143 states and 1433 transitions. [2021-11-20 07:11:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:11:23,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2021-11-20 07:11:23,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:23,629 INFO L225 Difference]: With dead ends: 1143 [2021-11-20 07:11:23,629 INFO L226 Difference]: Without dead ends: 599 [2021-11-20 07:11:23,630 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 07:11:23,631 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 07:11:23,631 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 07:11:23,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-20 07:11:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-11-20 07:11:23,655 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 07:11:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2021-11-20 07:11:23,659 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 138 [2021-11-20 07:11:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:23,659 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2021-11-20 07:11:23,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 07:11:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2021-11-20 07:11:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-20 07:11:23,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:23,662 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 07:11:23,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:23,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:23,882 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 07:11:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash -455907138, now seen corresponding path program 1 times [2021-11-20 07:11:23,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:23,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741262551] [2021-11-20 07:11:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:23,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:23,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:23,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248652383] [2021-11-20 07:11:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:23,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:23,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:23,912 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:23,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 07:11:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:24,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:11:24,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:24,737 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 07:11:24,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:25,152 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 07:11:25,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:25,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741262551] [2021-11-20 07:11:25,153 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:25,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248652383] [2021-11-20 07:11:25,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248652383] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:25,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:11:25,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-20 07:11:25,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987631914] [2021-11-20 07:11:25,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:25,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:11:25,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:11:25,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:11:25,156 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 07:11:25,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:25,368 INFO L93 Difference]: Finished difference Result 1157 states and 1469 transitions. [2021-11-20 07:11:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:11:25,369 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 07:11:25,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:25,374 INFO L225 Difference]: With dead ends: 1157 [2021-11-20 07:11:25,374 INFO L226 Difference]: Without dead ends: 608 [2021-11-20 07:11:25,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:11:25,376 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 21 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:25,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 798 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:25,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-20 07:11:25,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-11-20 07:11:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2132867132867133) internal successors, (694), 586 states have internal predecessors, (694), 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 07:11:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 756 transitions. [2021-11-20 07:11:25,413 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 756 transitions. Word has length 142 [2021-11-20 07:11:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:25,413 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 756 transitions. [2021-11-20 07:11:25,414 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 07:11:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 756 transitions. [2021-11-20 07:11:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-20 07:11:25,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:25,416 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 07:11:25,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:25,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 07:11:25,629 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 07:11:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:25,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1165658882, now seen corresponding path program 2 times [2021-11-20 07:11:25,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:25,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511477144] [2021-11-20 07:11:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:25,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:25,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:25,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619857440] [2021-11-20 07:11:25,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:11:25,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:25,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:25,649 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:25,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 07:11:26,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:11:26,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:11:26,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 07:11:26,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 68 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 07:11:26,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 4 proven. 71 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-20 07:11:27,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:27,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511477144] [2021-11-20 07:11:27,114 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:27,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619857440] [2021-11-20 07:11:27,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619857440] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:27,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:11:27,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-11-20 07:11:27,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418539948] [2021-11-20 07:11:27,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:27,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 07:11:27,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:27,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 07:11:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:11:27,117 INFO L87 Difference]: Start difference. First operand 608 states and 756 transitions. Second operand has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 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 07:11:28,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:28,396 INFO L93 Difference]: Finished difference Result 1216 states and 1564 transitions. [2021-11-20 07:11:28,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:11:28,396 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 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 150 [2021-11-20 07:11:28,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:28,400 INFO L225 Difference]: With dead ends: 1216 [2021-11-20 07:11:28,400 INFO L226 Difference]: Without dead ends: 610 [2021-11-20 07:11:28,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=234, Invalid=468, Unknown=0, NotChecked=0, Total=702 [2021-11-20 07:11:28,403 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 287 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:28,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 1586 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:11:28,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-11-20 07:11:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2021-11-20 07:11:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2080419580419581) internal successors, (691), 586 states have internal predecessors, (691), 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 07:11:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 753 transitions. [2021-11-20 07:11:28,434 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 753 transitions. Word has length 150 [2021-11-20 07:11:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:28,434 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 753 transitions. [2021-11-20 07:11:28,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 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 07:11:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 753 transitions. [2021-11-20 07:11:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-20 07:11:28,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:28,437 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 07:11:28,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:28,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 07:11:28,663 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 07:11:28,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash 133017410, now seen corresponding path program 3 times [2021-11-20 07:11:28,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:28,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110057765] [2021-11-20 07:11:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:28,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:28,680 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:28,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600544533] [2021-11-20 07:11:28,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:11:28,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:28,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:28,682 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:28,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 07:11:28,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 07:11:28,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:11:28,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:11:28,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:29,290 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 07:11:29,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:29,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:29,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110057765] [2021-11-20 07:11:29,294 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:29,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600544533] [2021-11-20 07:11:29,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600544533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:29,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:29,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:11:29,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607430893] [2021-11-20 07:11:29,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:29,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:11:29,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:29,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:11:29,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:11:29,297 INFO L87 Difference]: Start difference. First operand 608 states and 753 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 07:11:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:29,400 INFO L93 Difference]: Finished difference Result 608 states and 753 transitions. [2021-11-20 07:11:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:11:29,401 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 07:11:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:29,405 INFO L225 Difference]: With dead ends: 608 [2021-11-20 07:11:29,405 INFO L226 Difference]: Without dead ends: 607 [2021-11-20 07:11:29,408 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 07:11:29,409 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 543 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:29,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 1159 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-20 07:11:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2021-11-20 07:11:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 572 states have (on average 1.2045454545454546) internal successors, (689), 585 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 07:11:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 751 transitions. [2021-11-20 07:11:29,441 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 751 transitions. Word has length 162 [2021-11-20 07:11:29,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:29,441 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 751 transitions. [2021-11-20 07:11:29,442 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 07:11:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 751 transitions. [2021-11-20 07:11:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-20 07:11:29,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:29,449 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 07:11:29,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:29,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 07:11:29,666 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 07:11:29,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash 843065872, now seen corresponding path program 1 times [2021-11-20 07:11:29,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:29,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422577860] [2021-11-20 07:11:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:29,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:29,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:29,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165275538] [2021-11-20 07:11:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:29,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:29,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:29,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:29,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 07:11:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:30,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:11:30,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:30,786 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 07:11:30,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:31,612 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 07:11:31,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:31,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422577860] [2021-11-20 07:11:31,613 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:31,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165275538] [2021-11-20 07:11:31,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165275538] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:31,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:11:31,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-20 07:11:31,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174798889] [2021-11-20 07:11:31,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:31,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:11:31,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:31,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:11:31,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:11:31,617 INFO L87 Difference]: Start difference. First operand 607 states and 751 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 07:11:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:31,828 INFO L93 Difference]: Finished difference Result 819 states and 1026 transitions. [2021-11-20 07:11:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:11:31,830 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 07:11:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:31,834 INFO L225 Difference]: With dead ends: 819 [2021-11-20 07:11:31,835 INFO L226 Difference]: Without dead ends: 818 [2021-11-20 07:11:31,836 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 07:11:31,836 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 808 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:31,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 2153 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-11-20 07:11:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 606. [2021-11-20 07:11:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 572 states have (on average 1.2027972027972027) internal successors, (688), 584 states have internal predecessors, (688), 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 07:11:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 750 transitions. [2021-11-20 07:11:31,869 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 750 transitions. Word has length 361 [2021-11-20 07:11:31,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:31,870 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 750 transitions. [2021-11-20 07:11:31,871 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 07:11:31,871 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 750 transitions. [2021-11-20 07:11:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-20 07:11:31,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:31,878 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 07:11:31,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:32,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 07:11:32,094 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 07:11:32,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:32,094 INFO L85 PathProgramCache]: Analyzing trace with hash 651455842, now seen corresponding path program 1 times [2021-11-20 07:11:32,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:32,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669734324] [2021-11-20 07:11:32,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:32,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:32,132 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:32,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991453749] [2021-11-20 07:11:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:32,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:32,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:32,135 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:32,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 07:11:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:32,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:11:32,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:33,343 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 07:11:33,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:34,138 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 07:11:34,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:34,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669734324] [2021-11-20 07:11:34,139 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:34,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991453749] [2021-11-20 07:11:34,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991453749] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:34,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:11:34,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-20 07:11:34,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150869409] [2021-11-20 07:11:34,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:34,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:11:34,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:34,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:11:34,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:11:34,143 INFO L87 Difference]: Start difference. First operand 606 states and 750 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 07:11:34,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:34,458 INFO L93 Difference]: Finished difference Result 1371 states and 1702 transitions. [2021-11-20 07:11:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:11:34,459 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 07:11:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:34,499 INFO L225 Difference]: With dead ends: 1371 [2021-11-20 07:11:34,499 INFO L226 Difference]: Without dead ends: 1338 [2021-11-20 07:11:34,500 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 07:11:34,501 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1950 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:34,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 2990 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:11:34,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-20 07:11:34,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2021-11-20 07:11:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1280 states have (on average 1.19375) internal successors, (1528), 1292 states have internal predecessors, (1528), 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 07:11:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1646 transitions. [2021-11-20 07:11:34,560 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1646 transitions. Word has length 366 [2021-11-20 07:11:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:34,561 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 1646 transitions. [2021-11-20 07:11:34,562 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 07:11:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1646 transitions. [2021-11-20 07:11:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2021-11-20 07:11:34,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:34,591 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 07:11:34,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:34,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:34,810 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 07:11:34,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:34,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1343124998, now seen corresponding path program 2 times [2021-11-20 07:11:34,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:34,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62189145] [2021-11-20 07:11:34,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:34,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:34,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:34,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875952451] [2021-11-20 07:11:34,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:11:34,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:34,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:34,869 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:34,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 07:11:35,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 07:11:35,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:11:35,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:11:35,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:36,698 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 07:11:36,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:36,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:36,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62189145] [2021-11-20 07:11:36,698 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:36,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875952451] [2021-11-20 07:11:36,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875952451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:36,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:36,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:11:36,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701340039] [2021-11-20 07:11:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:36,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:11:36,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:36,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:11:36,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:11:36,701 INFO L87 Difference]: Start difference. First operand 1338 states and 1646 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 07:11:36,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:36,767 INFO L93 Difference]: Finished difference Result 1364 states and 1692 transitions. [2021-11-20 07:11:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:11:36,767 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 07:11:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:36,779 INFO L225 Difference]: With dead ends: 1364 [2021-11-20 07:11:36,779 INFO L226 Difference]: Without dead ends: 1363 [2021-11-20 07:11:36,780 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 07:11:36,781 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 07:11:36,781 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 07:11:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-11-20 07:11:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1340. [2021-11-20 07:11:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1282 states have (on average 1.1934477379095163) internal successors, (1530), 1294 states have internal predecessors, (1530), 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 07:11:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1648 transitions. [2021-11-20 07:11:36,843 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1648 transitions. Word has length 774 [2021-11-20 07:11:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:36,845 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1648 transitions. [2021-11-20 07:11:36,845 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 07:11:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1648 transitions. [2021-11-20 07:11:36,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2021-11-20 07:11:36,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:36,856 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 07:11:36,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:37,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 07:11:37,078 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 07:11:37,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:37,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1312797241, now seen corresponding path program 1 times [2021-11-20 07:11:37,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:37,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60440428] [2021-11-20 07:11:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:37,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:37,113 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:37,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043938454] [2021-11-20 07:11:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:37,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:37,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:37,114 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:37,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 07:11:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:37,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 2159 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 07:11:37,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:39,399 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 07:11:39,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:41,011 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 07:11:41,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:41,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60440428] [2021-11-20 07:11:41,011 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:41,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043938454] [2021-11-20 07:11:41,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043938454] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:41,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:11:41,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-11-20 07:11:41,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770406465] [2021-11-20 07:11:41,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:41,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 07:11:41,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:41,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 07:11:41,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-20 07:11:41,016 INFO L87 Difference]: Start difference. First operand 1340 states and 1648 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 07:11:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:41,469 INFO L93 Difference]: Finished difference Result 1924 states and 2377 transitions. [2021-11-20 07:11:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:11:41,470 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 07:11:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:41,482 INFO L225 Difference]: With dead ends: 1924 [2021-11-20 07:11:41,483 INFO L226 Difference]: Without dead ends: 1889 [2021-11-20 07:11:41,484 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 07:11:41,485 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 2885 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2937 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:41,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2937 Valid, 3011 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:11:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2021-11-20 07:11:41,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1889. [2021-11-20 07:11:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1813 states have (on average 1.1913954771097628) internal successors, (2160), 1825 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 07:11:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2320 transitions. [2021-11-20 07:11:41,567 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2320 transitions. Word has length 775 [2021-11-20 07:11:41,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:41,569 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2320 transitions. [2021-11-20 07:11:41,570 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 07:11:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2320 transitions. [2021-11-20 07:11:41,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2021-11-20 07:11:41,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:41,586 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 07:11:41,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:41,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 07:11:41,814 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 07:11:41,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:41,815 INFO L85 PathProgramCache]: Analyzing trace with hash 936534412, now seen corresponding path program 2 times [2021-11-20 07:11:41,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:41,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888645606] [2021-11-20 07:11:41,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:41,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:41,864 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:41,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412181605] [2021-11-20 07:11:41,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:11:41,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:41,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:41,866 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:41,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 07:11:42,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 07:11:42,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:11:42,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:11:42,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:44,279 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 07:11:44,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:44,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:44,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888645606] [2021-11-20 07:11:44,280 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:44,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412181605] [2021-11-20 07:11:44,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412181605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:44,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:44,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:11:44,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270590775] [2021-11-20 07:11:44,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:44,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:11:44,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:44,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:11:44,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:11:44,283 INFO L87 Difference]: Start difference. First operand 1889 states and 2320 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 07:11:44,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:44,384 INFO L93 Difference]: Finished difference Result 1889 states and 2320 transitions. [2021-11-20 07:11:44,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:11:44,385 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 07:11:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:44,398 INFO L225 Difference]: With dead ends: 1889 [2021-11-20 07:11:44,398 INFO L226 Difference]: Without dead ends: 1888 [2021-11-20 07:11:44,399 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 07:11:44,400 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 07:11:44,401 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 07:11:44,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2021-11-20 07:11:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1888. [2021-11-20 07:11:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1813 states have (on average 1.1908439051296194) internal successors, (2159), 1824 states have internal predecessors, (2159), 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 07:11:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2319 transitions. [2021-11-20 07:11:44,507 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2319 transitions. Word has length 1081 [2021-11-20 07:11:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:44,509 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 2319 transitions. [2021-11-20 07:11:44,509 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 07:11:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2319 transitions. [2021-11-20 07:11:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2021-11-20 07:11:44,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:44,529 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 07:11:44,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:44,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:44,753 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 07:11:44,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:44,754 INFO L85 PathProgramCache]: Analyzing trace with hash -668135051, now seen corresponding path program 1 times [2021-11-20 07:11:44,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:44,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2817554] [2021-11-20 07:11:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:44,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:44,796 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:44,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221091041] [2021-11-20 07:11:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:44,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:44,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:44,798 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:44,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 07:11:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:45,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:11:45,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:47,622 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 07:11:47,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:49,822 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 07:11:49,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:49,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2817554] [2021-11-20 07:11:49,822 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:49,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221091041] [2021-11-20 07:11:49,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221091041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:49,824 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:11:49,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-11-20 07:11:49,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311539068] [2021-11-20 07:11:49,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:49,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:11:49,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:11:49,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:11:49,828 INFO L87 Difference]: Start difference. First operand 1888 states and 2319 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 07:11:50,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:50,194 INFO L93 Difference]: Finished difference Result 1980 states and 2470 transitions. [2021-11-20 07:11:50,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:11:50,195 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 07:11:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:50,208 INFO L225 Difference]: With dead ends: 1980 [2021-11-20 07:11:50,209 INFO L226 Difference]: Without dead ends: 1979 [2021-11-20 07:11:50,210 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 07:11:50,211 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 694 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:50,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 623 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:11:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2021-11-20 07:11:50,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1978. [2021-11-20 07:11:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1870 states have (on average 1.2010695187165776) internal successors, (2246), 1911 states have internal predecessors, (2246), 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 07:11:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2466 transitions. [2021-11-20 07:11:50,296 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2466 transitions. Word has length 1092 [2021-11-20 07:11:50,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:50,298 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 2466 transitions. [2021-11-20 07:11:50,298 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 07:11:50,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2466 transitions. [2021-11-20 07:11:50,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2021-11-20 07:11:50,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:50,316 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 07:11:50,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:50,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:50,530 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 07:11:50,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1476694257, now seen corresponding path program 2 times [2021-11-20 07:11:50,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:50,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282820186] [2021-11-20 07:11:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:50,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:50,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:50,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140149755] [2021-11-20 07:11:50,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:11:50,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:50,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:50,563 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:50,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 07:11:51,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:11:51,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:11:51,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:11:51,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:53,453 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 07:11:53,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:55,710 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 07:11:55,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:55,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282820186] [2021-11-20 07:11:55,711 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:55,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140149755] [2021-11-20 07:11:55,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140149755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:55,711 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:11:55,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-11-20 07:11:55,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926107071] [2021-11-20 07:11:55,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:55,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 07:11:55,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:55,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 07:11:55,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-20 07:11:55,715 INFO L87 Difference]: Start difference. First operand 1978 states and 2466 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 07:11:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:56,732 INFO L93 Difference]: Finished difference Result 2160 states and 2767 transitions. [2021-11-20 07:11:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 07:11:56,734 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 07:11:56,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:56,745 INFO L225 Difference]: With dead ends: 2160 [2021-11-20 07:11:56,745 INFO L226 Difference]: Without dead ends: 2159 [2021-11-20 07:11:56,747 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 07:11:56,748 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1506 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:56,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1279 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:11:56,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2021-11-20 07:11:56,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 2158. [2021-11-20 07:11:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 1984 states have (on average 1.219758064516129) internal successors, (2420), 2085 states have internal predecessors, (2420), 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 07:11:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 2760 transitions. [2021-11-20 07:11:56,855 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 2760 transitions. Word has length 1128 [2021-11-20 07:11:56,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:56,857 INFO L470 AbstractCegarLoop]: Abstraction has 2158 states and 2760 transitions. [2021-11-20 07:11:56,857 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 07:11:56,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 2760 transitions. [2021-11-20 07:11:56,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2021-11-20 07:11:56,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:56,877 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 07:11:56,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:57,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-20 07:11:57,078 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 07:11:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:57,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1849203223, now seen corresponding path program 3 times [2021-11-20 07:11:57,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:57,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552076565] [2021-11-20 07:11:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:57,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:57,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:57,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698492083] [2021-11-20 07:11:57,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:11:57,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:57,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:57,112 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:57,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-20 07:11:57,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 07:11:57,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:11:57,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:11:57,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:58,995 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 07:11:58,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:58,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:58,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552076565] [2021-11-20 07:11:58,996 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:11:58,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698492083] [2021-11-20 07:11:58,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698492083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:58,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:58,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:11:58,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876154208] [2021-11-20 07:11:58,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:58,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:11:58,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:58,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:11:58,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:11:58,999 INFO L87 Difference]: Start difference. First operand 2158 states and 2760 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 07:11:59,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:59,162 INFO L93 Difference]: Finished difference Result 2475 states and 3247 transitions. [2021-11-20 07:11:59,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:11:59,164 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 07:11:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:59,181 INFO L225 Difference]: With dead ends: 2475 [2021-11-20 07:11:59,181 INFO L226 Difference]: Without dead ends: 2474 [2021-11-20 07:11:59,182 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 07:11:59,183 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 07:11:59,183 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 07:11:59,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-11-20 07:11:59,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2401. [2021-11-20 07:11:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 2155 states have (on average 1.2440835266821346) internal successors, (2681), 2310 states have internal predecessors, (2681), 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 07:11:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3147 transitions. [2021-11-20 07:11:59,299 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3147 transitions. Word has length 1200 [2021-11-20 07:11:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:59,301 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 3147 transitions. [2021-11-20 07:11:59,301 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 07:11:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3147 transitions. [2021-11-20 07:11:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2021-11-20 07:11:59,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:59,323 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 07:11:59,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:59,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-20 07:11:59,537 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 07:11:59,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash -293047512, now seen corresponding path program 1 times [2021-11-20 07:11:59,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:59,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728828184] [2021-11-20 07:11:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:59,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:59,588 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:11:59,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556154640] [2021-11-20 07:11:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:59,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:59,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:59,590 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:59,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-20 07:12:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:00,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 3270 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 07:12:00,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:03,026 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 07:12:03,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:05,673 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 07:12:05,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:05,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728828184] [2021-11-20 07:12:05,674 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:12:05,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556154640] [2021-11-20 07:12:05,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556154640] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:12:05,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:12:05,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-11-20 07:12:05,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361827570] [2021-11-20 07:12:05,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:05,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 07:12:05,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:05,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 07:12:05,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 07:12:05,681 INFO L87 Difference]: Start difference. First operand 2401 states and 3147 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 07:12:08,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:08,852 INFO L93 Difference]: Finished difference Result 3118 states and 4315 transitions. [2021-11-20 07:12:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-20 07:12:08,854 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 07:12:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:08,878 INFO L225 Difference]: With dead ends: 3118 [2021-11-20 07:12:08,878 INFO L226 Difference]: Without dead ends: 3117 [2021-11-20 07:12:08,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2443 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-11-20 07:12:08,883 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 4164 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 1751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4174 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 3767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1751 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:08,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4174 Valid, 1837 Invalid, 3767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1751 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 07:12:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2021-11-20 07:12:09,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 3097. [2021-11-20 07:12:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 2611 states have (on average 1.2933741861355803) internal successors, (3377), 2970 states have internal predecessors, (3377), 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 07:12:09,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4275 transitions. [2021-11-20 07:12:09,122 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4275 transitions. Word has length 1201 [2021-11-20 07:12:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:09,124 INFO L470 AbstractCegarLoop]: Abstraction has 3097 states and 4275 transitions. [2021-11-20 07:12:09,125 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 07:12:09,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4275 transitions. [2021-11-20 07:12:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2021-11-20 07:12:09,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:09,153 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 07:12:09,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:09,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-20 07:12:09,382 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 07:12:09,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:09,382 INFO L85 PathProgramCache]: Analyzing trace with hash 36679480, now seen corresponding path program 2 times [2021-11-20 07:12:09,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:09,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887429843] [2021-11-20 07:12:09,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:09,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:09,434 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:12:09,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145983255] [2021-11-20 07:12:09,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:12:09,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:09,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:09,436 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:09,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-20 07:12:10,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:12:10,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:12:10,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 3702 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-20 07:12:10,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:13,488 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 07:12:13,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:17,928 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 07:12:17,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:17,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887429843] [2021-11-20 07:12:17,928 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:12:17,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145983255] [2021-11-20 07:12:17,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145983255] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:12:17,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:12:17,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-11-20 07:12:17,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145570164] [2021-11-20 07:12:17,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:17,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-20 07:12:17,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:17,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-20 07:12:17,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-20 07:12:17,937 INFO L87 Difference]: Start difference. First operand 3097 states and 4275 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 07:12:27,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:27,009 INFO L93 Difference]: Finished difference Result 4510 states and 6583 transitions. [2021-11-20 07:12:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-11-20 07:12:27,010 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 07:12:27,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:27,040 INFO L225 Difference]: With dead ends: 4510 [2021-11-20 07:12:27,040 INFO L226 Difference]: Without dead ends: 4509 [2021-11-20 07:12:27,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2779 GetRequests, 2596 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-11-20 07:12:27,053 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 8441 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 5268 mSolverCounterSat, 4203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8451 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 9471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4203 IncrementalHoareTripleChecker+Valid, 5268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:27,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8451 Valid, 2087 Invalid, 9471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4203 Valid, 5268 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 07:12:27,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2021-11-20 07:12:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4489. [2021-11-20 07:12:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 3523 states have (on average 1.3536758444507522) internal successors, (4769), 4290 states have internal predecessors, (4769), 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 07:12:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6531 transitions. [2021-11-20 07:12:27,335 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6531 transitions. Word has length 1345 [2021-11-20 07:12:27,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:27,337 INFO L470 AbstractCegarLoop]: Abstraction has 4489 states and 6531 transitions. [2021-11-20 07:12:27,337 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 07:12:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6531 transitions. [2021-11-20 07:12:27,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1634 [2021-11-20 07:12:27,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:27,380 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 07:12:27,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:27,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:27,594 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 07:12:27,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:27,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1715259224, now seen corresponding path program 3 times [2021-11-20 07:12:27,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:27,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485806787] [2021-11-20 07:12:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:27,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:27,633 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:12:27,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449322810] [2021-11-20 07:12:27,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:12:27,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:27,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:27,634 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:27,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-20 07:12:27,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 07:12:27,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:12:27,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:12:27,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:30,129 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 07:12:30,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:12:30,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:30,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485806787] [2021-11-20 07:12:30,130 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:12:30,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449322810] [2021-11-20 07:12:30,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449322810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:30,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:30,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:12:30,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758995568] [2021-11-20 07:12:30,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:30,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:12:30,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:30,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:12:30,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:12:30,134 INFO L87 Difference]: Start difference. First operand 4489 states and 6531 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 07:12:30,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:30,732 INFO L93 Difference]: Finished difference Result 7364 states and 11017 transitions. [2021-11-20 07:12:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:12:30,733 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 07:12:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:30,772 INFO L225 Difference]: With dead ends: 7364 [2021-11-20 07:12:30,772 INFO L226 Difference]: Without dead ends: 7363 [2021-11-20 07:12:30,775 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 07:12:30,776 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 498 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:30,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 701 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:12:30,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7363 states. [2021-11-20 07:12:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7363 to 6900. [2021-11-20 07:12:31,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6900 states, 5230 states have (on average 1.4103250478011473) internal successors, (7376), 6522 states have internal predecessors, (7376), 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 07:12:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6900 states to 6900 states and 10368 transitions. [2021-11-20 07:12:31,253 INFO L78 Accepts]: Start accepts. Automaton has 6900 states and 10368 transitions. Word has length 1633 [2021-11-20 07:12:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:31,258 INFO L470 AbstractCegarLoop]: Abstraction has 6900 states and 10368 transitions. [2021-11-20 07:12:31,258 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 07:12:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 6900 states and 10368 transitions. [2021-11-20 07:12:31,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2021-11-20 07:12:31,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:31,310 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 07:12:31,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:31,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:31,526 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 07:12:31,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:31,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2107118562, now seen corresponding path program 1 times [2021-11-20 07:12:31,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:31,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525462993] [2021-11-20 07:12:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:31,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:31,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:12:31,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743374176] [2021-11-20 07:12:31,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:31,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:31,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:31,568 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:31,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-20 07:12:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:32,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 4570 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-20 07:12:32,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:38,268 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 07:12:38,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:47,515 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 07:12:47,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:47,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525462993] [2021-11-20 07:12:47,516 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:12:47,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743374176] [2021-11-20 07:12:47,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743374176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:12:47,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:12:47,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-11-20 07:12:47,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413747368] [2021-11-20 07:12:47,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:47,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-20 07:12:47,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-20 07:12:47,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-11-20 07:12:47,535 INFO L87 Difference]: Start difference. First operand 6900 states and 10368 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 07:13:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:24,139 INFO L93 Difference]: Finished difference Result 12332 states and 19132 transitions. [2021-11-20 07:13:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-11-20 07:13:24,140 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 07:13:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:24,196 INFO L225 Difference]: With dead ends: 12332 [2021-11-20 07:13:24,197 INFO L226 Difference]: Without dead ends: 12331 [2021-11-20 07:13:24,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3455 GetRequests, 3080 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-11-20 07:13:24,218 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 17404 mSDsluCounter, 3663 mSDsCounter, 0 mSdLazyCounter, 13154 mSolverCounterSat, 9498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17414 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 22652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9498 IncrementalHoareTripleChecker+Valid, 13154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:24,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17414 Valid, 3919 Invalid, 22652 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9498 Valid, 13154 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-20 07:13:24,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2021-11-20 07:13:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 12276. [2021-11-20 07:13:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12276 states, 8878 states have (on average 1.4579860328902905) internal successors, (12944), 11562 states have internal predecessors, (12944), 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 07:13:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12276 states to 12276 states and 19008 transitions. [2021-11-20 07:13:25,155 INFO L78 Accepts]: Start accepts. Automaton has 12276 states and 19008 transitions. Word has length 1635 [2021-11-20 07:13:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:25,157 INFO L470 AbstractCegarLoop]: Abstraction has 12276 states and 19008 transitions. [2021-11-20 07:13:25,158 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 07:13:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 12276 states and 19008 transitions. [2021-11-20 07:13:25,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2212 [2021-11-20 07:13:25,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:25,252 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 07:13:25,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-20 07:13:25,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-20 07:13:25,466 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 07:13:25,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:25,467 INFO L85 PathProgramCache]: Analyzing trace with hash -502166434, now seen corresponding path program 2 times [2021-11-20 07:13:25,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:25,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139730038] [2021-11-20 07:13:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:25,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:25,546 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:13:25,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638749879] [2021-11-20 07:13:25,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:13:25,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:13:25,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:25,547 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:13:25,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-20 07:13:26,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:13:26,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:13:26,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 6298 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-20 07:13:26,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:13:40,411 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 07:13:40,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:08,497 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 07:14:08,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:08,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139730038] [2021-11-20 07:14:08,498 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:14:08,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638749879] [2021-11-20 07:14:08,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638749879] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:14:08,498 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:14:08,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-11-20 07:14:08,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017712025] [2021-11-20 07:14:08,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:14:08,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-20 07:14:08,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:08,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-20 07:14:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-11-20 07:14:08,524 INFO L87 Difference]: Start difference. First operand 12276 states and 19008 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 07:18:26,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:18:26,317 INFO L93 Difference]: Finished difference Result 23084 states and 36460 transitions. [2021-11-20 07:18:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-11-20 07:18:26,318 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 07:18:26,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:18:26,591 INFO L225 Difference]: With dead ends: 23084 [2021-11-20 07:18:26,591 INFO L226 Difference]: Without dead ends: 23083 [2021-11-20 07:18:26,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4799 GetRequests, 4040 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 78.0s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-11-20 07:18:26,645 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 44580 mSDsluCounter, 5852 mSDsCounter, 0 mSdLazyCounter, 26704 mSolverCounterSat, 26417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44590 SdHoareTripleChecker+Valid, 6108 SdHoareTripleChecker+Invalid, 53121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 26417 IncrementalHoareTripleChecker+Valid, 26704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:18:26,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44590 Valid, 6108 Invalid, 53121 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [26417 Valid, 26704 Invalid, 0 Unknown, 0 Unchecked, 22.9s Time] [2021-11-20 07:18:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23083 states. [2021-11-20 07:18:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23083 to 23028. [2021-11-20 07:18:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23028 states, 16174 states have (on average 1.488809199950538) internal successors, (24080), 21642 states have internal predecessors, (24080), 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 07:18:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23028 states to 23028 states and 36288 transitions. [2021-11-20 07:18:28,100 INFO L78 Accepts]: Start accepts. Automaton has 23028 states and 36288 transitions. Word has length 2211 [2021-11-20 07:18:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:18:28,103 INFO L470 AbstractCegarLoop]: Abstraction has 23028 states and 36288 transitions. [2021-11-20 07:18:28,104 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 07:18:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 23028 states and 36288 transitions. [2021-11-20 07:18:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3364 [2021-11-20 07:18:28,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:18:28,279 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 07:18:28,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-20 07:18:28,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-20 07:18:28,494 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 07:18:28,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:18:28,496 INFO L85 PathProgramCache]: Analyzing trace with hash 785304798, now seen corresponding path program 3 times [2021-11-20 07:18:28,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:18:28,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305912021] [2021-11-20 07:18:28,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:28,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:18:28,588 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:18:28,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733951318] [2021-11-20 07:18:28,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:18:28,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:18:28,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:18:28,590 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:18:28,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-20 07:18:29,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 07:18:29,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:18:29,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:18:29,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:18:33,364 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 07:18:33,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:18:33,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:18:33,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305912021] [2021-11-20 07:18:33,365 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:18:33,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733951318] [2021-11-20 07:18:33,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733951318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:18:33,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:18:33,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:18:33,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896010876] [2021-11-20 07:18:33,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:18:33,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:18:33,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:18:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:18:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:18:33,368 INFO L87 Difference]: Start difference. First operand 23028 states and 36288 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 07:18:36,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:18:36,249 INFO L93 Difference]: Finished difference Result 45982 states and 72021 transitions. [2021-11-20 07:18:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:18:36,249 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 07:18:36,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:18:36,411 INFO L225 Difference]: With dead ends: 45982 [2021-11-20 07:18:36,411 INFO L226 Difference]: Without dead ends: 45981 [2021-11-20 07:18:36,424 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 07:18:36,425 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 07:18:36,426 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 07:18:36,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45981 states. [2021-11-20 07:18:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45981 to 37516. [2021-11-20 07:18:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37516 states, 26912 states have (on average 1.50371581450654) internal successors, (40468), 34999 states have internal predecessors, (40468), 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 07:18:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37516 states to 37516 states and 59044 transitions. [2021-11-20 07:18:38,752 INFO L78 Accepts]: Start accepts. Automaton has 37516 states and 59044 transitions. Word has length 3363 [2021-11-20 07:18:38,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:18:38,754 INFO L470 AbstractCegarLoop]: Abstraction has 37516 states and 59044 transitions. [2021-11-20 07:18:38,754 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 07:18:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 37516 states and 59044 transitions. [2021-11-20 07:18:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3365 [2021-11-20 07:18:39,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:18:39,375 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 07:18:39,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-20 07:18:39,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-20 07:18:39,577 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 07:18:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:18:39,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1020250295, now seen corresponding path program 1 times [2021-11-20 07:18:39,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:18:39,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139948780] [2021-11-20 07:18:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:39,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:18:39,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:18:39,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796629241] [2021-11-20 07:18:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:39,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:18:39,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:18:39,653 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:18:39,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3656f2-b3a6-4267-96da-20fa42ec88b3/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-20 07:18:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:41,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 9757 conjuncts, 383 conjunts are in the unsatisfiable core [2021-11-20 07:18:41,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:19:23,078 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 07:19:23,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:03,652 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 07:21:03,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:03,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139948780] [2021-11-20 07:21:03,653 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:21:03,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796629241] [2021-11-20 07:21:03,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796629241] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:21:03,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:21:03,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765 [2021-11-20 07:21:03,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812559527] [2021-11-20 07:21:03,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:21:03,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-11-20 07:21:03,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:03,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-11-20 07:21:03,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-11-20 07:21:03,706 INFO L87 Difference]: Start difference. First operand 37516 states and 59044 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)