./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX --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 aa1583b531c18e8d25726690525e5ca2db800c1fca35b7cfde3a7fa11382718a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:40:58,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:40:58,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:40:58,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:40:58,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:40:58,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:40:58,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:40:58,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:40:58,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:40:58,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:40:58,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:40:58,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:40:58,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:40:58,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:40:58,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:40:58,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:40:58,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:40:58,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:40:58,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:40:58,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:40:58,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:40:58,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:40:58,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:40:58,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:40:58,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:40:58,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:40:58,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:40:58,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:40:58,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:40:58,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:40:58,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:40:58,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:40:58,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:40:58,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:40:58,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:40:58,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:40:58,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:40:58,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:40:58,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:40:58,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:40:58,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:40:58,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-09 10:40:58,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:40:58,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:40:58,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:40:58,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:40:58,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:40:58,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:40:58,507 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:40:58,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:40:58,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:40:58,508 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:40:58,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:40:58,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:40:58,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:40:58,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:40:58,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:40:58,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:40:58,509 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-09 10:40:58,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:40:58,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:40:58,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:40:58,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:40:58,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:40:58,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:40:58,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:40:58,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:40:58,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:40:58,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:40:58,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:40:58,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:40:58,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:40:58,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:40:58,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:40:58,513 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_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa1583b531c18e8d25726690525e5ca2db800c1fca35b7cfde3a7fa11382718a [2021-11-09 10:40:58,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:40:58,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:40:58,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:40:58,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:40:58,846 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:40:58,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i [2021-11-09 10:40:58,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/data/5be53141e/d60dded784db4fd9a14537a9d0bcd47c/FLAG55472c145 [2021-11-09 10:40:59,526 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:40:59,527 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i [2021-11-09 10:40:59,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/data/5be53141e/d60dded784db4fd9a14537a9d0bcd47c/FLAG55472c145 [2021-11-09 10:40:59,908 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/data/5be53141e/d60dded784db4fd9a14537a9d0bcd47c [2021-11-09 10:40:59,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:40:59,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:40:59,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:40:59,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:40:59,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:40:59,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:59" (1/1) ... [2021-11-09 10:40:59,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161cc46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:59, skipping insertion in model container [2021-11-09 10:40:59,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:59" (1/1) ... [2021-11-09 10:40:59,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:40:59,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:41:00,105 WARN L228 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_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i[873,886] [2021-11-09 10:41:00,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:41:00,124 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:41:00,138 WARN L228 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_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i[873,886] [2021-11-09 10:41:00,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:41:00,156 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:41:00,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00 WrapperNode [2021-11-09 10:41:00,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:41:00,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:41:00,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:41:00,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:41:00,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (1/1) ... [2021-11-09 10:41:00,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (1/1) ... [2021-11-09 10:41:00,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:41:00,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:41:00,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:41:00,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:41:00,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (1/1) ... [2021-11-09 10:41:00,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (1/1) ... [2021-11-09 10:41:00,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (1/1) ... [2021-11-09 10:41:00,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (1/1) ... [2021-11-09 10:41:00,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (1/1) ... [2021-11-09 10:41:00,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (1/1) ... [2021-11-09 10:41:00,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (1/1) ... [2021-11-09 10:41:00,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:41:00,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:41:00,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:41:00,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:41:00,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (1/1) ... [2021-11-09 10:41:00,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:41:00,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:00,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:41:00,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:41:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:41:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:41:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:41:00,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:41:00,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:41:00,601 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-09 10:41:00,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:41:00 BoogieIcfgContainer [2021-11-09 10:41:00,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:41:00,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:41:00,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:41:00,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:41:00,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:40:59" (1/3) ... [2021-11-09 10:41:00,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281f8181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:41:00, skipping insertion in model container [2021-11-09 10:41:00,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:41:00" (2/3) ... [2021-11-09 10:41:00,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281f8181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:41:00, skipping insertion in model container [2021-11-09 10:41:00,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:41:00" (3/3) ... [2021-11-09 10:41:00,619 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark36_conjunctive.i [2021-11-09 10:41:00,625 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:41:00,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-09 10:41:00,699 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:41:00,711 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 [2021-11-09 10:41:00,712 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-09 10:41:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-09 10:41:00,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:00,739 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-09 10:41:00,740 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:00,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:00,758 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-11-09 10:41:00,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:00,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21250579] [2021-11-09 10:41:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:00,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:01,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:01,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21250579] [2021-11-09 10:41:01,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21250579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:41:01,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:41:01,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:41:01,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841516924] [2021-11-09 10:41:01,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:41:01,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:01,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:41:01,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:41:01,093 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:01,151 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-09 10:41:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:41:01,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-09 10:41:01,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:01,162 INFO L225 Difference]: With dead ends: 35 [2021-11-09 10:41:01,163 INFO L226 Difference]: Without dead ends: 16 [2021-11-09 10:41:01,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:41:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-09 10:41:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-11-09 10:41:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-09 10:41:01,211 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-09 10:41:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:01,212 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-09 10:41:01,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-09 10:41:01,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 10:41:01,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:01,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 10:41:01,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:41:01,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:01,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-11-09 10:41:01,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:01,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158764073] [2021-11-09 10:41:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:01,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:01,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:01,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158764073] [2021-11-09 10:41:01,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158764073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:41:01,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:41:01,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:41:01,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083907488] [2021-11-09 10:41:01,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:41:01,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:41:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:41:01,313 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-09 10:41:01,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:01,341 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-11-09 10:41:01,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:41:01,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2021-11-09 10:41:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:01,343 INFO L225 Difference]: With dead ends: 14 [2021-11-09 10:41:01,343 INFO L226 Difference]: Without dead ends: 13 [2021-11-09 10:41:01,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:41:01,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-09 10:41:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-09 10:41:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-09 10:41:01,348 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-11-09 10:41:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:01,348 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-09 10:41:01,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-09 10:41:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-09 10:41:01,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 10:41:01,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:01,350 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:41:01,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:41:01,351 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:01,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:01,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-11-09 10:41:01,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:01,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959270670] [2021-11-09 10:41:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:01,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:01,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:01,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959270670] [2021-11-09 10:41:01,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959270670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:41:01,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:41:01,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:41:01,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455169797] [2021-11-09 10:41:01,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:41:01,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:01,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:41:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:41:01,433 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:01,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:01,465 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-09 10:41:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:41:01,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-09 10:41:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:01,468 INFO L225 Difference]: With dead ends: 18 [2021-11-09 10:41:01,469 INFO L226 Difference]: Without dead ends: 17 [2021-11-09 10:41:01,469 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:41:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-09 10:41:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-11-09 10:41:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-09 10:41:01,478 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2021-11-09 10:41:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:01,479 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-09 10:41:01,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-09 10:41:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 10:41:01,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:01,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:41:01,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:41:01,481 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:01,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:01,483 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-11-09 10:41:01,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:01,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45629930] [2021-11-09 10:41:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:01,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:01,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:01,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45629930] [2021-11-09 10:41:01,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45629930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:41:01,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:41:01,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:41:01,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739281124] [2021-11-09 10:41:01,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:41:01,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:01,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:41:01,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:41:01,606 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:01,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:01,675 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-09 10:41:01,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:41:01,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-09 10:41:01,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:01,677 INFO L225 Difference]: With dead ends: 15 [2021-11-09 10:41:01,677 INFO L226 Difference]: Without dead ends: 14 [2021-11-09 10:41:01,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:41:01,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-09 10:41:01,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-09 10:41:01,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-09 10:41:01,681 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2021-11-09 10:41:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:01,681 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-09 10:41:01,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:01,682 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-09 10:41:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:41:01,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:01,683 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:41:01,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:41:01,683 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:01,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-11-09 10:41:01,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:01,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722751508] [2021-11-09 10:41:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:01,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:01,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:01,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722751508] [2021-11-09 10:41:01,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722751508] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:01,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615809974] [2021-11-09 10:41:01,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:01,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:01,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:01,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:01,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:41:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:01,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:41:01,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:02,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615809974] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:02,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:02,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-09 10:41:02,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093973165] [2021-11-09 10:41:02,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:41:02,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:02,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:41:02,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:41:02,027 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:02,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:02,086 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-09 10:41:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:41:02,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 10:41:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:02,092 INFO L225 Difference]: With dead ends: 19 [2021-11-09 10:41:02,092 INFO L226 Difference]: Without dead ends: 18 [2021-11-09 10:41:02,093 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:41:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-09 10:41:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-11-09 10:41:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-09 10:41:02,097 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2021-11-09 10:41:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:02,098 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-09 10:41:02,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-09 10:41:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 10:41:02,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:02,099 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-09 10:41:02,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:02,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:02,327 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:02,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:02,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-11-09 10:41:02,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:02,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637964575] [2021-11-09 10:41:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:02,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:02,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:02,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637964575] [2021-11-09 10:41:02,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637964575] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:02,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327792349] [2021-11-09 10:41:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:02,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:02,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:02,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:02,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:41:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:02,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:41:02,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:02,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327792349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:02,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:02,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-09 10:41:02,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462953132] [2021-11-09 10:41:02,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:41:02,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:02,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:41:02,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:41:02,559 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:02,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:02,594 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-09 10:41:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:41:02,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-09 10:41:02,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:02,595 INFO L225 Difference]: With dead ends: 21 [2021-11-09 10:41:02,595 INFO L226 Difference]: Without dead ends: 20 [2021-11-09 10:41:02,596 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:41:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-09 10:41:02,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-11-09 10:41:02,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-09 10:41:02,600 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2021-11-09 10:41:02,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:02,601 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-09 10:41:02,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-09 10:41:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 10:41:02,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:02,602 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-09 10:41:02,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-09 10:41:02,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-09 10:41:02,827 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash 487275813, now seen corresponding path program 2 times [2021-11-09 10:41:02,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:02,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407365297] [2021-11-09 10:41:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:02,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:02,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:02,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407365297] [2021-11-09 10:41:02,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407365297] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:02,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180639972] [2021-11-09 10:41:02,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:41:02,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:02,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:02,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:02,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 10:41:02,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:41:02,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:02,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 10:41:02,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:03,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180639972] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:03,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:03,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-09 10:41:03,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046385677] [2021-11-09 10:41:03,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:41:03,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:03,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:41:03,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:41:03,041 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:03,092 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-11-09 10:41:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:41:03,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-09 10:41:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:03,094 INFO L225 Difference]: With dead ends: 24 [2021-11-09 10:41:03,094 INFO L226 Difference]: Without dead ends: 23 [2021-11-09 10:41:03,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:41:03,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-09 10:41:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-09 10:41:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-11-09 10:41:03,100 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2021-11-09 10:41:03,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:03,100 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-11-09 10:41:03,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-11-09 10:41:03,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 10:41:03,101 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:03,101 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-11-09 10:41:03,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:03,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:03,320 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:03,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:03,320 INFO L85 PathProgramCache]: Analyzing trace with hash 120622631, now seen corresponding path program 2 times [2021-11-09 10:41:03,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:03,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277952709] [2021-11-09 10:41:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:03,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:03,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:03,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:03,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277952709] [2021-11-09 10:41:03,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277952709] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:03,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249207077] [2021-11-09 10:41:03,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:41:03,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:03,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:03,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:03,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 10:41:03,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:41:03,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:03,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:41:03,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:03,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249207077] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:03,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:03,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-09 10:41:03,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960286] [2021-11-09 10:41:03,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:41:03,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:03,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:41:03,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:41:03,640 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:03,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:03,697 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-11-09 10:41:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:41:03,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-09 10:41:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:03,709 INFO L225 Difference]: With dead ends: 26 [2021-11-09 10:41:03,711 INFO L226 Difference]: Without dead ends: 25 [2021-11-09 10:41:03,712 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:41:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-09 10:41:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-11-09 10:41:03,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-11-09 10:41:03,718 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2021-11-09 10:41:03,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:03,719 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-11-09 10:41:03,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-11-09 10:41:03,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-09 10:41:03,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:03,721 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-09 10:41:03,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:03,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:03,946 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:03,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:03,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1418773263, now seen corresponding path program 3 times [2021-11-09 10:41:03,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:03,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860301683] [2021-11-09 10:41:03,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:03,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:04,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:04,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860301683] [2021-11-09 10:41:04,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860301683] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:04,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494037614] [2021-11-09 10:41:04,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:41:04,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:04,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:04,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:04,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 10:41:04,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 10:41:04,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:04,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 10:41:04,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:04,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494037614] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:04,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:04,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-11-09 10:41:04,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908761535] [2021-11-09 10:41:04,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:41:04,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:04,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:41:04,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:41:04,262 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:04,334 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-11-09 10:41:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 10:41:04,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-09 10:41:04,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:04,336 INFO L225 Difference]: With dead ends: 29 [2021-11-09 10:41:04,336 INFO L226 Difference]: Without dead ends: 28 [2021-11-09 10:41:04,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-09 10:41:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-09 10:41:04,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-11-09 10:41:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:04,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-11-09 10:41:04,341 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2021-11-09 10:41:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:04,341 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-11-09 10:41:04,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-11-09 10:41:04,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 10:41:04,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:04,343 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1] [2021-11-09 10:41:04,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:04,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:04,551 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:04,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1936471309, now seen corresponding path program 3 times [2021-11-09 10:41:04,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:04,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489195278] [2021-11-09 10:41:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:04,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:04,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:04,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489195278] [2021-11-09 10:41:04,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489195278] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:04,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017711659] [2021-11-09 10:41:04,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:41:04,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:04,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:04,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:04,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 10:41:04,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 10:41:04,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:04,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:41:04,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:04,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017711659] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:04,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:04,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-11-09 10:41:04,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887239999] [2021-11-09 10:41:04,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:41:04,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:04,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:41:04,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:41:04,827 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:04,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:04,880 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-11-09 10:41:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 10:41:04,881 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-09 10:41:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:04,882 INFO L225 Difference]: With dead ends: 31 [2021-11-09 10:41:04,882 INFO L226 Difference]: Without dead ends: 30 [2021-11-09 10:41:04,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-09 10:41:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-09 10:41:04,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-09 10:41:04,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-11-09 10:41:04,886 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 22 [2021-11-09 10:41:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:04,906 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-11-09 10:41:04,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-11-09 10:41:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-09 10:41:04,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:04,913 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-11-09 10:41:04,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:05,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:05,125 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:05,125 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 4 times [2021-11-09 10:41:05,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:05,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012010387] [2021-11-09 10:41:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:05,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:05,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:05,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012010387] [2021-11-09 10:41:05,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012010387] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:05,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259289328] [2021-11-09 10:41:05,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:41:05,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:05,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:05,263 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:05,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 10:41:05,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:41:05,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:05,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 10:41:05,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:05,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259289328] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:05,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:05,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-11-09 10:41:05,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630003018] [2021-11-09 10:41:05,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 10:41:05,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 10:41:05,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-09 10:41:05,471 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:05,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:05,555 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-11-09 10:41:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 10:41:05,556 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-09 10:41:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:05,559 INFO L225 Difference]: With dead ends: 34 [2021-11-09 10:41:05,560 INFO L226 Difference]: Without dead ends: 33 [2021-11-09 10:41:05,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-09 10:41:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-09 10:41:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-11-09 10:41:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-11-09 10:41:05,568 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2021-11-09 10:41:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:05,569 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-11-09 10:41:05,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-11-09 10:41:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-09 10:41:05,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:05,569 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-11-09 10:41:05,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:05,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:05,770 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 4 times [2021-11-09 10:41:05,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:05,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006842984] [2021-11-09 10:41:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:05,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:05,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:05,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006842984] [2021-11-09 10:41:05,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006842984] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:05,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909847560] [2021-11-09 10:41:05,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:41:05,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:05,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:05,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:05,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 10:41:05,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:41:05,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:05,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:41:05,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:06,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909847560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:06,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:06,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-11-09 10:41:06,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940697809] [2021-11-09 10:41:06,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 10:41:06,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:06,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 10:41:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-09 10:41:06,060 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:06,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:06,138 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-11-09 10:41:06,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 10:41:06,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-09 10:41:06,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:06,140 INFO L225 Difference]: With dead ends: 36 [2021-11-09 10:41:06,140 INFO L226 Difference]: Without dead ends: 35 [2021-11-09 10:41:06,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-09 10:41:06,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-09 10:41:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-11-09 10:41:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-11-09 10:41:06,145 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 27 [2021-11-09 10:41:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:06,145 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-11-09 10:41:06,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-11-09 10:41:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-09 10:41:06,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:06,147 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1] [2021-11-09 10:41:06,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:06,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:06,375 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash -977343119, now seen corresponding path program 5 times [2021-11-09 10:41:06,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:06,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968540131] [2021-11-09 10:41:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:06,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:06,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:06,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968540131] [2021-11-09 10:41:06,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968540131] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:06,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373214433] [2021-11-09 10:41:06,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:41:06,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:06,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:06,523 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:06,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 10:41:06,637 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-09 10:41:06,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:06,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:41:06,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:06,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373214433] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:06,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:06,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-11-09 10:41:06,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532871828] [2021-11-09 10:41:06,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 10:41:06,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:06,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 10:41:06,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-09 10:41:06,767 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:06,852 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-11-09 10:41:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 10:41:06,853 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-09 10:41:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:06,854 INFO L225 Difference]: With dead ends: 39 [2021-11-09 10:41:06,854 INFO L226 Difference]: Without dead ends: 38 [2021-11-09 10:41:06,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-09 10:41:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-09 10:41:06,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-11-09 10:41:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-11-09 10:41:06,859 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2021-11-09 10:41:06,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:06,860 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-11-09 10:41:06,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-11-09 10:41:06,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-09 10:41:06,861 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:06,861 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1] [2021-11-09 10:41:06,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:07,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 10:41:07,083 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1371102067, now seen corresponding path program 5 times [2021-11-09 10:41:07,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:07,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825345023] [2021-11-09 10:41:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:07,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:07,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:07,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825345023] [2021-11-09 10:41:07,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825345023] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:07,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833327379] [2021-11-09 10:41:07,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:41:07,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:07,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:07,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:07,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 10:41:07,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-09 10:41:07,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:07,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 10:41:07,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:07,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833327379] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:07,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:07,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-11-09 10:41:07,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113229436] [2021-11-09 10:41:07,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 10:41:07,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:07,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 10:41:07,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-09 10:41:07,469 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:07,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:07,547 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-11-09 10:41:07,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 10:41:07,548 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-09 10:41:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:07,550 INFO L225 Difference]: With dead ends: 41 [2021-11-09 10:41:07,550 INFO L226 Difference]: Without dead ends: 40 [2021-11-09 10:41:07,551 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-09 10:41:07,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-09 10:41:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-11-09 10:41:07,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-11-09 10:41:07,557 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 32 [2021-11-09 10:41:07,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:07,557 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-11-09 10:41:07,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:07,557 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-11-09 10:41:07,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-09 10:41:07,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:07,558 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1] [2021-11-09 10:41:07,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:07,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-09 10:41:07,759 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:07,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1362746405, now seen corresponding path program 6 times [2021-11-09 10:41:07,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:07,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068462576] [2021-11-09 10:41:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:07,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:07,905 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:07,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:07,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068462576] [2021-11-09 10:41:07,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068462576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:07,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564090093] [2021-11-09 10:41:07,906 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:41:07,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:07,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:07,911 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:07,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 10:41:08,040 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-09 10:41:08,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:08,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 10:41:08,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:08,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564090093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:08,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:08,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-11-09 10:41:08,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776125333] [2021-11-09 10:41:08,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 10:41:08,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:08,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 10:41:08,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-09 10:41:08,195 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:08,321 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-11-09 10:41:08,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 10:41:08,322 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-09 10:41:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:08,324 INFO L225 Difference]: With dead ends: 44 [2021-11-09 10:41:08,324 INFO L226 Difference]: Without dead ends: 43 [2021-11-09 10:41:08,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-09 10:41:08,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-09 10:41:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-11-09 10:41:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-11-09 10:41:08,339 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2021-11-09 10:41:08,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:08,339 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-11-09 10:41:08,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:08,339 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-11-09 10:41:08,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-09 10:41:08,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:08,340 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2021-11-09 10:41:08,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:08,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-09 10:41:08,542 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -365728473, now seen corresponding path program 6 times [2021-11-09 10:41:08,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:08,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315094257] [2021-11-09 10:41:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:08,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:08,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:08,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315094257] [2021-11-09 10:41:08,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315094257] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:08,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606246359] [2021-11-09 10:41:08,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:41:08,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:08,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:08,715 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:08,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 10:41:08,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-09 10:41:08,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:08,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 10:41:08,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:08,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606246359] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:08,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:08,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-11-09 10:41:08,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541994186] [2021-11-09 10:41:08,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 10:41:08,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:08,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 10:41:08,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-09 10:41:08,997 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:09,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:09,110 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-11-09 10:41:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 10:41:09,111 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-09 10:41:09,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:09,111 INFO L225 Difference]: With dead ends: 46 [2021-11-09 10:41:09,112 INFO L226 Difference]: Without dead ends: 45 [2021-11-09 10:41:09,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-09 10:41:09,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-09 10:41:09,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-11-09 10:41:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:09,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-11-09 10:41:09,117 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 37 [2021-11-09 10:41:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:09,117 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-11-09 10:41:09,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-11-09 10:41:09,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-09 10:41:09,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:09,118 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1] [2021-11-09 10:41:09,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:09,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-09 10:41:09,323 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:09,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash 915144177, now seen corresponding path program 7 times [2021-11-09 10:41:09,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:09,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523249207] [2021-11-09 10:41:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:09,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:09,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:09,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523249207] [2021-11-09 10:41:09,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523249207] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:09,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434430196] [2021-11-09 10:41:09,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:41:09,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:09,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:09,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:09,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 10:41:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:09,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 10:41:09,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:09,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434430196] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:09,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:09,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-11-09 10:41:09,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156909631] [2021-11-09 10:41:09,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 10:41:09,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 10:41:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:41:09,787 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:09,906 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-11-09 10:41:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 10:41:09,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-09 10:41:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:09,907 INFO L225 Difference]: With dead ends: 49 [2021-11-09 10:41:09,907 INFO L226 Difference]: Without dead ends: 48 [2021-11-09 10:41:09,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2021-11-09 10:41:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-09 10:41:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-11-09 10:41:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-11-09 10:41:09,913 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2021-11-09 10:41:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:09,913 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-11-09 10:41:09,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-11-09 10:41:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-09 10:41:09,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:09,914 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1] [2021-11-09 10:41:09,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:10,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:10,131 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:10,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:10,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1014739981, now seen corresponding path program 7 times [2021-11-09 10:41:10,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:10,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121982483] [2021-11-09 10:41:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:10,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:10,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:10,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121982483] [2021-11-09 10:41:10,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121982483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:10,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780138623] [2021-11-09 10:41:10,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:41:10,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:10,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:10,289 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:10,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 10:41:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:10,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 10:41:10,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:10,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780138623] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:10,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:10,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-11-09 10:41:10,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653517331] [2021-11-09 10:41:10,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 10:41:10,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:10,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 10:41:10,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:41:10,629 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:10,743 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-11-09 10:41:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 10:41:10,744 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-09 10:41:10,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:10,744 INFO L225 Difference]: With dead ends: 51 [2021-11-09 10:41:10,744 INFO L226 Difference]: Without dead ends: 50 [2021-11-09 10:41:10,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2021-11-09 10:41:10,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-09 10:41:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-11-09 10:41:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-11-09 10:41:10,749 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2021-11-09 10:41:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:10,750 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-11-09 10:41:10,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-11-09 10:41:10,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-09 10:41:10,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:10,751 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1] [2021-11-09 10:41:10,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:10,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 10:41:10,951 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2138891355, now seen corresponding path program 8 times [2021-11-09 10:41:10,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:10,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209728343] [2021-11-09 10:41:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:10,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:11,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:11,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209728343] [2021-11-09 10:41:11,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209728343] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:11,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963437839] [2021-11-09 10:41:11,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:41:11,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:11,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:11,127 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:11,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 10:41:11,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:41:11,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:11,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-09 10:41:11,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:11,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963437839] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:11,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:11,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-11-09 10:41:11,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601943425] [2021-11-09 10:41:11,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 10:41:11,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:11,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 10:41:11,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-11-09 10:41:11,468 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:11,607 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-11-09 10:41:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 10:41:11,611 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-09 10:41:11,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:11,612 INFO L225 Difference]: With dead ends: 54 [2021-11-09 10:41:11,612 INFO L226 Difference]: Without dead ends: 53 [2021-11-09 10:41:11,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2021-11-09 10:41:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-09 10:41:11,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-11-09 10:41:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.04) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-11-09 10:41:11,617 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2021-11-09 10:41:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:11,618 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-11-09 10:41:11,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-11-09 10:41:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 10:41:11,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:11,619 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1] [2021-11-09 10:41:11,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:11,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:11,835 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1814744231, now seen corresponding path program 8 times [2021-11-09 10:41:11,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:11,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751736346] [2021-11-09 10:41:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:11,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:12,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:12,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751736346] [2021-11-09 10:41:12,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751736346] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:12,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197834143] [2021-11-09 10:41:12,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:41:12,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:12,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:12,014 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:12,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 10:41:12,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:41:12,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:12,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-09 10:41:12,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:12,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197834143] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:12,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:12,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-11-09 10:41:12,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598603145] [2021-11-09 10:41:12,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 10:41:12,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 10:41:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-11-09 10:41:12,360 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:12,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:12,507 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-11-09 10:41:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 10:41:12,508 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-09 10:41:12,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:12,509 INFO L225 Difference]: With dead ends: 56 [2021-11-09 10:41:12,509 INFO L226 Difference]: Without dead ends: 55 [2021-11-09 10:41:12,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2021-11-09 10:41:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-09 10:41:12,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-11-09 10:41:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:12,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-11-09 10:41:12,522 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 47 [2021-11-09 10:41:12,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:12,522 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-11-09 10:41:12,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-11-09 10:41:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 10:41:12,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:12,531 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1] [2021-11-09 10:41:12,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:12,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:12,735 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:12,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:12,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2002882959, now seen corresponding path program 9 times [2021-11-09 10:41:12,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:12,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704963858] [2021-11-09 10:41:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:12,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:12,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:12,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704963858] [2021-11-09 10:41:12,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704963858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:12,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642938325] [2021-11-09 10:41:12,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:41:12,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:12,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:12,939 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:12,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 10:41:13,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-09 10:41:13,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:13,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-09 10:41:13,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:13,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642938325] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:13,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:13,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-11-09 10:41:13,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555603909] [2021-11-09 10:41:13,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 10:41:13,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 10:41:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-09 10:41:13,297 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 22 states, 21 states have (on average 2.380952380952381) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:13,449 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-11-09 10:41:13,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 10:41:13,449 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.380952380952381) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-09 10:41:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:13,450 INFO L225 Difference]: With dead ends: 59 [2021-11-09 10:41:13,450 INFO L226 Difference]: Without dead ends: 58 [2021-11-09 10:41:13,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2021-11-09 10:41:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-09 10:41:13,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-11-09 10:41:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2021-11-09 10:41:13,456 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2021-11-09 10:41:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:13,456 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2021-11-09 10:41:13,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.380952380952381) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2021-11-09 10:41:13,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-09 10:41:13,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:13,457 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1] [2021-11-09 10:41:13,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:13,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:13,683 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:13,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:13,683 INFO L85 PathProgramCache]: Analyzing trace with hash -625173389, now seen corresponding path program 9 times [2021-11-09 10:41:13,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:13,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987525453] [2021-11-09 10:41:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:13,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:13,901 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:13,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:13,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987525453] [2021-11-09 10:41:13,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987525453] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:13,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806341714] [2021-11-09 10:41:13,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:41:13,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:13,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:13,902 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:13,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 10:41:14,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-09 10:41:14,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:14,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-09 10:41:14,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:14,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806341714] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:14,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:14,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-11-09 10:41:14,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864862446] [2021-11-09 10:41:14,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 10:41:14,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:14,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 10:41:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-09 10:41:14,292 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:14,443 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-11-09 10:41:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 10:41:14,444 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-09 10:41:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:14,445 INFO L225 Difference]: With dead ends: 61 [2021-11-09 10:41:14,445 INFO L226 Difference]: Without dead ends: 60 [2021-11-09 10:41:14,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2021-11-09 10:41:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-09 10:41:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2021-11-09 10:41:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-11-09 10:41:14,454 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 52 [2021-11-09 10:41:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:14,454 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-11-09 10:41:14,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-11-09 10:41:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-09 10:41:14,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:14,457 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-11-09 10:41:14,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:14,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-09 10:41:14,683 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 10 times [2021-11-09 10:41:14,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:14,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347217596] [2021-11-09 10:41:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:14,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:14,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:14,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347217596] [2021-11-09 10:41:14,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347217596] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:14,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556273592] [2021-11-09 10:41:14,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:41:14,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:14,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:14,917 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:14,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 10:41:15,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:41:15,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:15,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-09 10:41:15,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:15,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556273592] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:15,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:15,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-11-09 10:41:15,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547536011] [2021-11-09 10:41:15,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 10:41:15,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 10:41:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-09 10:41:15,335 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:15,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:15,515 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-11-09 10:41:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 10:41:15,516 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-09 10:41:15,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:15,517 INFO L225 Difference]: With dead ends: 64 [2021-11-09 10:41:15,517 INFO L226 Difference]: Without dead ends: 63 [2021-11-09 10:41:15,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2021-11-09 10:41:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-09 10:41:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-11-09 10:41:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-11-09 10:41:15,521 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2021-11-09 10:41:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:15,521 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-11-09 10:41:15,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-11-09 10:41:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 10:41:15,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:15,522 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-11-09 10:41:15,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:15,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-09 10:41:15,723 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:15,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1980812327, now seen corresponding path program 10 times [2021-11-09 10:41:15,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:15,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649004857] [2021-11-09 10:41:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:15,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:15,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:15,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649004857] [2021-11-09 10:41:15,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649004857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:15,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829948322] [2021-11-09 10:41:15,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:41:15,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:15,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:15,983 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:16,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 10:41:16,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:41:16,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:16,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-09 10:41:16,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:16,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829948322] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:16,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:16,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-11-09 10:41:16,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371028347] [2021-11-09 10:41:16,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 10:41:16,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:16,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 10:41:16,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-09 10:41:16,438 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:16,619 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-11-09 10:41:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 10:41:16,619 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-09 10:41:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:16,620 INFO L225 Difference]: With dead ends: 66 [2021-11-09 10:41:16,620 INFO L226 Difference]: Without dead ends: 65 [2021-11-09 10:41:16,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2021-11-09 10:41:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-09 10:41:16,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-11-09 10:41:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.032258064516129) internal successors, (64), 63 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-11-09 10:41:16,624 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 57 [2021-11-09 10:41:16,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:16,625 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-11-09 10:41:16,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:16,626 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-11-09 10:41:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 10:41:16,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:16,627 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1] [2021-11-09 10:41:16,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:16,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:16,835 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:16,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1824407281, now seen corresponding path program 11 times [2021-11-09 10:41:16,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:16,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611215164] [2021-11-09 10:41:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:16,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:17,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:17,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611215164] [2021-11-09 10:41:17,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611215164] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:17,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778015080] [2021-11-09 10:41:17,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:41:17,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:17,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:17,208 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:17,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 10:41:17,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-09 10:41:17,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:17,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 10:41:17,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:17,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778015080] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:17,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:17,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-11-09 10:41:17,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071329503] [2021-11-09 10:41:17,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-09 10:41:17,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:17,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-09 10:41:17,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-11-09 10:41:17,735 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 26 states, 25 states have (on average 2.4) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:17,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:17,949 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-11-09 10:41:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 10:41:17,949 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-09 10:41:17,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:17,950 INFO L225 Difference]: With dead ends: 69 [2021-11-09 10:41:17,950 INFO L226 Difference]: Without dead ends: 68 [2021-11-09 10:41:17,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 10:41:17,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-09 10:41:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2021-11-09 10:41:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-11-09 10:41:17,954 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2021-11-09 10:41:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:17,955 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-11-09 10:41:17,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:17,955 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-11-09 10:41:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 10:41:17,956 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:17,956 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1] [2021-11-09 10:41:17,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:18,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-09 10:41:18,156 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash 908741875, now seen corresponding path program 11 times [2021-11-09 10:41:18,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:18,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301032657] [2021-11-09 10:41:18,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:18,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:18,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:18,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301032657] [2021-11-09 10:41:18,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301032657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:18,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072596583] [2021-11-09 10:41:18,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:41:18,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:18,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:18,435 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:18,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-09 10:41:18,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-09 10:41:18,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:18,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-09 10:41:18,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:18,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072596583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:18,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:18,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-11-09 10:41:18,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466758369] [2021-11-09 10:41:18,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-09 10:41:18,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-09 10:41:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-11-09 10:41:18,952 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 26 states, 25 states have (on average 2.48) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:19,150 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-11-09 10:41:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 10:41:19,150 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.48) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-09 10:41:19,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:19,151 INFO L225 Difference]: With dead ends: 71 [2021-11-09 10:41:19,151 INFO L226 Difference]: Without dead ends: 70 [2021-11-09 10:41:19,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 10:41:19,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-09 10:41:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2021-11-09 10:41:19,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:19,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2021-11-09 10:41:19,156 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 62 [2021-11-09 10:41:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:19,157 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2021-11-09 10:41:19,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.48) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2021-11-09 10:41:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 10:41:19,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:19,158 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1] [2021-11-09 10:41:19,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:19,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:19,372 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:19,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1150384805, now seen corresponding path program 12 times [2021-11-09 10:41:19,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:19,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356608408] [2021-11-09 10:41:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:19,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:19,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:19,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356608408] [2021-11-09 10:41:19,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356608408] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:19,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96281751] [2021-11-09 10:41:19,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:41:19,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:19,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:19,703 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:19,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-09 10:41:20,133 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-09 10:41:20,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:20,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-09 10:41:20,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:20,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96281751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:20,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:20,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-11-09 10:41:20,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965911979] [2021-11-09 10:41:20,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 10:41:20,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:20,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 10:41:20,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-11-09 10:41:20,361 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:20,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:20,588 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-11-09 10:41:20,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 10:41:20,589 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-09 10:41:20,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:20,590 INFO L225 Difference]: With dead ends: 74 [2021-11-09 10:41:20,590 INFO L226 Difference]: Without dead ends: 73 [2021-11-09 10:41:20,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2021-11-09 10:41:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-09 10:41:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-11-09 10:41:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-11-09 10:41:20,594 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2021-11-09 10:41:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:20,594 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-11-09 10:41:20,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-11-09 10:41:20,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 10:41:20,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:20,595 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1] [2021-11-09 10:41:20,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:20,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-09 10:41:20,819 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:20,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:20,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1713204135, now seen corresponding path program 12 times [2021-11-09 10:41:20,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:20,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724604526] [2021-11-09 10:41:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:20,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:21,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:21,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724604526] [2021-11-09 10:41:21,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724604526] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:21,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376004745] [2021-11-09 10:41:21,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:41:21,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:21,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:21,139 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:21,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-09 10:41:21,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-09 10:41:21,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:21,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-09 10:41:21,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:21,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376004745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:21,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:21,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-11-09 10:41:21,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309685943] [2021-11-09 10:41:21,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 10:41:21,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:21,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 10:41:21,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-11-09 10:41:21,825 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 28 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:22,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:22,054 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2021-11-09 10:41:22,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 10:41:22,055 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 28 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 10:41:22,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:22,056 INFO L225 Difference]: With dead ends: 76 [2021-11-09 10:41:22,056 INFO L226 Difference]: Without dead ends: 75 [2021-11-09 10:41:22,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2021-11-09 10:41:22,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-09 10:41:22,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-11-09 10:41:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:22,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-11-09 10:41:22,060 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 67 [2021-11-09 10:41:22,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:22,061 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-11-09 10:41:22,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 28 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-11-09 10:41:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 10:41:22,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:22,062 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1] [2021-11-09 10:41:22,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:22,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-09 10:41:22,279 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash 968060785, now seen corresponding path program 13 times [2021-11-09 10:41:22,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:22,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545556714] [2021-11-09 10:41:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:22,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:22,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:22,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545556714] [2021-11-09 10:41:22,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545556714] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:22,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820789906] [2021-11-09 10:41:22,678 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:41:22,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:22,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:22,679 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:22,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-09 10:41:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:23,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-09 10:41:23,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:23,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820789906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:23,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:23,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-11-09 10:41:23,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580992651] [2021-11-09 10:41:23,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-09 10:41:23,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-09 10:41:23,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-11-09 10:41:23,258 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 30 states, 29 states have (on average 2.413793103448276) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:23,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:23,472 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-11-09 10:41:23,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 10:41:23,473 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.413793103448276) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-09 10:41:23,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:23,475 INFO L225 Difference]: With dead ends: 79 [2021-11-09 10:41:23,475 INFO L226 Difference]: Without dead ends: 78 [2021-11-09 10:41:23,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2021-11-09 10:41:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-09 10:41:23,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-11-09 10:41:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2021-11-09 10:41:23,481 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2021-11-09 10:41:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:23,481 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2021-11-09 10:41:23,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.413793103448276) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2021-11-09 10:41:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 10:41:23,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:23,482 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1] [2021-11-09 10:41:23,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:23,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-09 10:41:23,699 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:23,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1701487245, now seen corresponding path program 13 times [2021-11-09 10:41:23,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:23,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674386509] [2021-11-09 10:41:23,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:23,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:24,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:24,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674386509] [2021-11-09 10:41:24,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674386509] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:24,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172755530] [2021-11-09 10:41:24,056 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:41:24,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:24,066 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:24,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-09 10:41:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:24,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-09 10:41:24,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:24,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172755530] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:24,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:24,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-11-09 10:41:24,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8478312] [2021-11-09 10:41:24,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-09 10:41:24,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:24,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-09 10:41:24,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-11-09 10:41:24,648 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:24,876 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-11-09 10:41:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 10:41:24,876 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-09 10:41:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:24,877 INFO L225 Difference]: With dead ends: 81 [2021-11-09 10:41:24,877 INFO L226 Difference]: Without dead ends: 80 [2021-11-09 10:41:24,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2021-11-09 10:41:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-09 10:41:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-11-09 10:41:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2021-11-09 10:41:24,882 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 72 [2021-11-09 10:41:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:24,882 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2021-11-09 10:41:24,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2021-11-09 10:41:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 10:41:24,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:24,884 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1] [2021-11-09 10:41:24,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:25,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:25,099 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:25,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash 197564965, now seen corresponding path program 14 times [2021-11-09 10:41:25,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:25,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665395269] [2021-11-09 10:41:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:25,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:25,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:25,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665395269] [2021-11-09 10:41:25,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665395269] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:25,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059019522] [2021-11-09 10:41:25,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:41:25,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:25,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:25,488 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:25,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-09 10:41:25,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:41:25,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:25,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-09 10:41:25,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:26,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059019522] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:26,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:26,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-11-09 10:41:26,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421460173] [2021-11-09 10:41:26,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-09 10:41:26,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-09 10:41:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-11-09 10:41:26,254 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 32 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:26,534 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-11-09 10:41:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-09 10:41:26,535 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-09 10:41:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:26,536 INFO L225 Difference]: With dead ends: 84 [2021-11-09 10:41:26,536 INFO L226 Difference]: Without dead ends: 83 [2021-11-09 10:41:26,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2021-11-09 10:41:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-09 10:41:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-11-09 10:41:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 1.025) internal successors, (82), 81 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-11-09 10:41:26,540 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2021-11-09 10:41:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:26,541 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-11-09 10:41:26,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-11-09 10:41:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 10:41:26,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:26,542 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1] [2021-11-09 10:41:26,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:26,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:26,755 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 881371943, now seen corresponding path program 14 times [2021-11-09 10:41:26,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:26,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146862527] [2021-11-09 10:41:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:26,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:27,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:27,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146862527] [2021-11-09 10:41:27,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146862527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:27,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594078060] [2021-11-09 10:41:27,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:41:27,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:27,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:27,181 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:27,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-09 10:41:27,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:41:27,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:27,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-09 10:41:27,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:28,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594078060] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:28,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:28,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-11-09 10:41:28,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267543638] [2021-11-09 10:41:28,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-09 10:41:28,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-09 10:41:28,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-11-09 10:41:28,024 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:28,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:28,326 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-11-09 10:41:28,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-09 10:41:28,327 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-09 10:41:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:28,328 INFO L225 Difference]: With dead ends: 86 [2021-11-09 10:41:28,328 INFO L226 Difference]: Without dead ends: 85 [2021-11-09 10:41:28,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2021-11-09 10:41:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-09 10:41:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-11-09 10:41:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2021-11-09 10:41:28,333 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 77 [2021-11-09 10:41:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:28,333 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2021-11-09 10:41:28,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2021-11-09 10:41:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 10:41:28,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:28,334 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1] [2021-11-09 10:41:28,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:28,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-09 10:41:28,555 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:28,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1816526833, now seen corresponding path program 15 times [2021-11-09 10:41:28,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:28,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513776717] [2021-11-09 10:41:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:28,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:29,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:29,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513776717] [2021-11-09 10:41:29,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513776717] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:29,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853192224] [2021-11-09 10:41:29,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:41:29,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:29,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:29,072 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:29,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-09 10:41:29,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-09 10:41:29,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:29,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-09 10:41:29,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:29,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853192224] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:29,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:29,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-11-09 10:41:29,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585662776] [2021-11-09 10:41:29,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 10:41:29,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:29,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 10:41:29,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 10:41:29,891 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:30,187 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2021-11-09 10:41:30,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-09 10:41:30,188 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-09 10:41:30,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:30,189 INFO L225 Difference]: With dead ends: 89 [2021-11-09 10:41:30,189 INFO L226 Difference]: Without dead ends: 88 [2021-11-09 10:41:30,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2021-11-09 10:41:30,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-09 10:41:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2021-11-09 10:41:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2021-11-09 10:41:30,195 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2021-11-09 10:41:30,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:30,196 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2021-11-09 10:41:30,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2021-11-09 10:41:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-09 10:41:30,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:30,197 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1] [2021-11-09 10:41:30,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-09 10:41:30,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:30,423 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:30,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:30,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1925565939, now seen corresponding path program 15 times [2021-11-09 10:41:30,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:30,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788057051] [2021-11-09 10:41:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:30,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:30,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:30,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788057051] [2021-11-09 10:41:30,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788057051] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:30,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765485842] [2021-11-09 10:41:30,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:41:30,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:30,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:30,891 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:30,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-09 10:41:31,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-09 10:41:31,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:31,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 10:41:31,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:32,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765485842] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:32,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:32,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-11-09 10:41:32,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407642770] [2021-11-09 10:41:32,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 10:41:32,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:32,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 10:41:32,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 10:41:32,066 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 34 states, 33 states have (on average 2.484848484848485) internal successors, (82), 34 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:32,354 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-11-09 10:41:32,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-09 10:41:32,354 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.484848484848485) internal successors, (82), 34 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-09 10:41:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:32,355 INFO L225 Difference]: With dead ends: 91 [2021-11-09 10:41:32,355 INFO L226 Difference]: Without dead ends: 90 [2021-11-09 10:41:32,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2021-11-09 10:41:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-09 10:41:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2021-11-09 10:41:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2021-11-09 10:41:32,360 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 82 [2021-11-09 10:41:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:32,361 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2021-11-09 10:41:32,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.484848484848485) internal successors, (82), 34 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2021-11-09 10:41:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 10:41:32,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:32,362 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1] [2021-11-09 10:41:32,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:32,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:32,562 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:32,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:32,563 INFO L85 PathProgramCache]: Analyzing trace with hash 951736741, now seen corresponding path program 16 times [2021-11-09 10:41:32,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:32,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729097908] [2021-11-09 10:41:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:32,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:33,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:33,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729097908] [2021-11-09 10:41:33,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729097908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:33,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042201217] [2021-11-09 10:41:33,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:41:33,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:33,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:33,115 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:33,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-09 10:41:33,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:41:33,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:33,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-09 10:41:33,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:34,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042201217] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:34,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:34,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-11-09 10:41:34,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227028150] [2021-11-09 10:41:34,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-09 10:41:34,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:34,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-09 10:41:34,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 10:41:34,045 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 36 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:34,378 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2021-11-09 10:41:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-09 10:41:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 36 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-09 10:41:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:34,379 INFO L225 Difference]: With dead ends: 94 [2021-11-09 10:41:34,379 INFO L226 Difference]: Without dead ends: 93 [2021-11-09 10:41:34,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2021-11-09 10:41:34,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-09 10:41:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-11-09 10:41:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 91 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-11-09 10:41:34,384 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2021-11-09 10:41:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:34,384 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-11-09 10:41:34,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 36 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-11-09 10:41:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-09 10:41:34,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:34,386 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1] [2021-11-09 10:41:34,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-11-09 10:41:34,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-09 10:41:34,595 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash -209024345, now seen corresponding path program 16 times [2021-11-09 10:41:34,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:34,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130438456] [2021-11-09 10:41:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:34,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:35,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:35,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130438456] [2021-11-09 10:41:35,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130438456] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:35,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428396488] [2021-11-09 10:41:35,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:41:35,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:35,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:35,144 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:35,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-09 10:41:35,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:41:35,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:35,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-09 10:41:35,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:36,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428396488] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:36,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:36,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-11-09 10:41:36,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928998905] [2021-11-09 10:41:36,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-09 10:41:36,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:36,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-09 10:41:36,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 10:41:36,307 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 36 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 36 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:36,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:36,658 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-11-09 10:41:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-09 10:41:36,659 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 36 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-09 10:41:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:36,660 INFO L225 Difference]: With dead ends: 96 [2021-11-09 10:41:36,660 INFO L226 Difference]: Without dead ends: 95 [2021-11-09 10:41:36,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2021-11-09 10:41:36,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-09 10:41:36,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-11-09 10:41:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 93 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:36,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-11-09 10:41:36,666 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 87 [2021-11-09 10:41:36,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:36,666 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-11-09 10:41:36,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 36 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-11-09 10:41:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-09 10:41:36,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:36,667 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1] [2021-11-09 10:41:36,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:36,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-09 10:41:36,883 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:36,884 INFO L85 PathProgramCache]: Analyzing trace with hash 658370673, now seen corresponding path program 17 times [2021-11-09 10:41:36,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:36,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444398038] [2021-11-09 10:41:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:36,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:37,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:37,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444398038] [2021-11-09 10:41:37,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444398038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:37,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766243512] [2021-11-09 10:41:37,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:41:37,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:37,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:37,402 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:37,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-09 10:41:38,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-09 10:41:38,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:38,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-09 10:41:38,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:38,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766243512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:38,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:38,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-11-09 10:41:38,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228302109] [2021-11-09 10:41:38,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-09 10:41:38,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:38,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-09 10:41:38,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 10:41:38,478 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 38 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:38,815 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2021-11-09 10:41:38,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-09 10:41:38,815 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-09 10:41:38,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:38,816 INFO L225 Difference]: With dead ends: 99 [2021-11-09 10:41:38,816 INFO L226 Difference]: Without dead ends: 98 [2021-11-09 10:41:38,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2021-11-09 10:41:38,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-09 10:41:38,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2021-11-09 10:41:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:38,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2021-11-09 10:41:38,821 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2021-11-09 10:41:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:38,821 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2021-11-09 10:41:38,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:38,821 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2021-11-09 10:41:38,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-09 10:41:38,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:38,822 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1] [2021-11-09 10:41:38,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:39,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-09 10:41:39,023 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1334025843, now seen corresponding path program 17 times [2021-11-09 10:41:39,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:39,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765390616] [2021-11-09 10:41:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:39,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:39,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:39,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765390616] [2021-11-09 10:41:39,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765390616] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:39,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991328484] [2021-11-09 10:41:39,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:41:39,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:39,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:39,591 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:39,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-09 10:41:40,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-09 10:41:40,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:40,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-09 10:41:40,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:40,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991328484] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:40,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:40,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-11-09 10:41:40,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050852474] [2021-11-09 10:41:40,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-09 10:41:40,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:40,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-09 10:41:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 10:41:40,743 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 38 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 38 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:41,096 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2021-11-09 10:41:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-09 10:41:41,097 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 38 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-09 10:41:41,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:41,097 INFO L225 Difference]: With dead ends: 101 [2021-11-09 10:41:41,098 INFO L226 Difference]: Without dead ends: 100 [2021-11-09 10:41:41,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2021-11-09 10:41:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-09 10:41:41,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2021-11-09 10:41:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 98 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2021-11-09 10:41:41,102 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 92 [2021-11-09 10:41:41,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:41,102 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2021-11-09 10:41:41,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 38 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:41,103 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2021-11-09 10:41:41,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-09 10:41:41,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:41,103 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1] [2021-11-09 10:41:41,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-11-09 10:41:41,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-09 10:41:41,307 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:41,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:41,308 INFO L85 PathProgramCache]: Analyzing trace with hash 631552293, now seen corresponding path program 18 times [2021-11-09 10:41:41,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:41,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843507945] [2021-11-09 10:41:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:41,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:41,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:41,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843507945] [2021-11-09 10:41:41,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843507945] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:41,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680928347] [2021-11-09 10:41:41,902 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:41:41,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:41,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:41,903 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:41,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-09 10:41:42,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-09 10:41:42,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:42,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-09 10:41:42,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:43,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680928347] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:43,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:43,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-11-09 10:41:43,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912449880] [2021-11-09 10:41:43,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-09 10:41:43,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:43,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-09 10:41:43,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2021-11-09 10:41:43,054 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 40 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:43,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:43,393 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2021-11-09 10:41:43,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-09 10:41:43,394 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-09 10:41:43,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:43,394 INFO L225 Difference]: With dead ends: 104 [2021-11-09 10:41:43,395 INFO L226 Difference]: Without dead ends: 103 [2021-11-09 10:41:43,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2021-11-09 10:41:43,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-09 10:41:43,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-11-09 10:41:43,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2021-11-09 10:41:43,399 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2021-11-09 10:41:43,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:43,400 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2021-11-09 10:41:43,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2021-11-09 10:41:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-09 10:41:43,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:43,401 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1] [2021-11-09 10:41:43,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-11-09 10:41:43,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-09 10:41:43,601 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:43,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:43,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1331366439, now seen corresponding path program 18 times [2021-11-09 10:41:43,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:43,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134306063] [2021-11-09 10:41:43,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:43,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:44,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:44,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134306063] [2021-11-09 10:41:44,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134306063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:44,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486043984] [2021-11-09 10:41:44,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:41:44,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:44,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:44,124 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:44,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-09 10:41:44,847 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-09 10:41:44,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:44,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-09 10:41:44,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:45,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486043984] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:45,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:45,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-11-09 10:41:45,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057662464] [2021-11-09 10:41:45,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-09 10:41:45,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:45,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-09 10:41:45,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2021-11-09 10:41:45,144 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:45,500 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2021-11-09 10:41:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-09 10:41:45,501 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-09 10:41:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:45,502 INFO L225 Difference]: With dead ends: 106 [2021-11-09 10:41:45,502 INFO L226 Difference]: Without dead ends: 105 [2021-11-09 10:41:45,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2021-11-09 10:41:45,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-09 10:41:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2021-11-09 10:41:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 103 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) [2021-11-09 10:41:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2021-11-09 10:41:45,507 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 97 [2021-11-09 10:41:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:45,507 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2021-11-09 10:41:45,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:45,508 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2021-11-09 10:41:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 10:41:45,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:45,509 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1] [2021-11-09 10:41:45,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:45,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-09 10:41:45,711 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:45,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1285340943, now seen corresponding path program 19 times [2021-11-09 10:41:45,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:45,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220434888] [2021-11-09 10:41:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:45,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:46,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:46,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220434888] [2021-11-09 10:41:46,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220434888] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:46,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286781570] [2021-11-09 10:41:46,407 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:41:46,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:46,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:46,408 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:46,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-09 10:41:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:47,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-09 10:41:47,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:47,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286781570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:47,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:47,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-11-09 10:41:47,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483758643] [2021-11-09 10:41:47,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-09 10:41:47,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:47,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-09 10:41:47,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2021-11-09 10:41:47,349 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand has 42 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:47,698 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2021-11-09 10:41:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-09 10:41:47,698 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-09 10:41:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:47,699 INFO L225 Difference]: With dead ends: 109 [2021-11-09 10:41:47,699 INFO L226 Difference]: Without dead ends: 108 [2021-11-09 10:41:47,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2021-11-09 10:41:47,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-09 10:41:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2021-11-09 10:41:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2021-11-09 10:41:47,703 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 100 [2021-11-09 10:41:47,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:47,703 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2021-11-09 10:41:47,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:47,704 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2021-11-09 10:41:47,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 10:41:47,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:47,705 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1] [2021-11-09 10:41:47,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:47,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-11-09 10:41:47,919 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:47,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1737936627, now seen corresponding path program 19 times [2021-11-09 10:41:47,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:47,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714889950] [2021-11-09 10:41:47,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:47,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:48,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:48,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714889950] [2021-11-09 10:41:48,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714889950] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:48,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513914922] [2021-11-09 10:41:48,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:41:48,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:48,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:48,587 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:48,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-09 10:41:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:49,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-09 10:41:49,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:49,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513914922] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:49,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:49,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-11-09 10:41:49,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554523096] [2021-11-09 10:41:49,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-09 10:41:49,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:49,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-09 10:41:49,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2021-11-09 10:41:49,596 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 42 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 42 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:50,054 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2021-11-09 10:41:50,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-09 10:41:50,055 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 42 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-09 10:41:50,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:50,056 INFO L225 Difference]: With dead ends: 111 [2021-11-09 10:41:50,056 INFO L226 Difference]: Without dead ends: 110 [2021-11-09 10:41:50,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2021-11-09 10:41:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-09 10:41:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2021-11-09 10:41:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 108 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2021-11-09 10:41:50,061 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 102 [2021-11-09 10:41:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:50,062 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2021-11-09 10:41:50,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 42 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2021-11-09 10:41:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-09 10:41:50,063 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:50,063 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1] [2021-11-09 10:41:50,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:50,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-11-09 10:41:50,279 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:50,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:50,279 INFO L85 PathProgramCache]: Analyzing trace with hash -960644955, now seen corresponding path program 20 times [2021-11-09 10:41:50,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:50,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870182321] [2021-11-09 10:41:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:50,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:50,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:50,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870182321] [2021-11-09 10:41:50,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870182321] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:50,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369125769] [2021-11-09 10:41:50,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:41:50,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:50,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:50,910 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:50,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-09 10:41:51,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:41:51,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:51,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-09 10:41:51,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:51,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369125769] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:51,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:51,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-11-09 10:41:51,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865457233] [2021-11-09 10:41:51,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-09 10:41:51,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-09 10:41:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2021-11-09 10:41:51,934 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand has 44 states, 43 states have (on average 2.441860465116279) internal successors, (105), 44 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:52,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:52,401 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2021-11-09 10:41:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-09 10:41:52,402 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.441860465116279) internal successors, (105), 44 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-09 10:41:52,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:52,403 INFO L225 Difference]: With dead ends: 114 [2021-11-09 10:41:52,403 INFO L226 Difference]: Without dead ends: 113 [2021-11-09 10:41:52,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 10:41:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-09 10:41:52,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2021-11-09 10:41:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 1.018181818181818) internal successors, (112), 111 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2021-11-09 10:41:52,408 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 105 [2021-11-09 10:41:52,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:52,409 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2021-11-09 10:41:52,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.441860465116279) internal successors, (105), 44 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2021-11-09 10:41:52,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 10:41:52,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:52,410 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1, 1, 1] [2021-11-09 10:41:52,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:52,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:52,623 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:52,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:52,624 INFO L85 PathProgramCache]: Analyzing trace with hash 238168487, now seen corresponding path program 20 times [2021-11-09 10:41:52,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:52,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151345420] [2021-11-09 10:41:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:52,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:53,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:53,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151345420] [2021-11-09 10:41:53,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151345420] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:53,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177001498] [2021-11-09 10:41:53,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:41:53,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:53,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:53,339 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:53,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-09 10:41:54,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:41:54,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:54,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-09 10:41:54,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:54,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177001498] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:54,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:54,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-11-09 10:41:54,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31359880] [2021-11-09 10:41:54,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-09 10:41:54,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-09 10:41:54,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2021-11-09 10:41:54,432 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 44 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:54,819 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2021-11-09 10:41:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-09 10:41:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 44 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-11-09 10:41:54,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:54,821 INFO L225 Difference]: With dead ends: 116 [2021-11-09 10:41:54,821 INFO L226 Difference]: Without dead ends: 115 [2021-11-09 10:41:54,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 10:41:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-09 10:41:54,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-11-09 10:41:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2021-11-09 10:41:54,826 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 107 [2021-11-09 10:41:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:54,826 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2021-11-09 10:41:54,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 44 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2021-11-09 10:41:54,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-09 10:41:54,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:54,828 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1] [2021-11-09 10:41:54,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:55,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-09 10:41:55,042 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash -8523407, now seen corresponding path program 21 times [2021-11-09 10:41:55,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:55,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680260927] [2021-11-09 10:41:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:55,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:55,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:55,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680260927] [2021-11-09 10:41:55,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680260927] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:55,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878617371] [2021-11-09 10:41:55,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:41:55,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:55,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:55,780 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:55,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-09 10:41:56,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-09 10:41:56,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:56,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-09 10:41:56,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:56,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878617371] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:56,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:56,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-11-09 10:41:56,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475693192] [2021-11-09 10:41:56,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-09 10:41:56,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:56,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-09 10:41:56,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 10:41:56,925 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 46 states, 45 states have (on average 2.4444444444444446) internal successors, (110), 46 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:57,329 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2021-11-09 10:41:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-09 10:41:57,329 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.4444444444444446) internal successors, (110), 46 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-09 10:41:57,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:57,330 INFO L225 Difference]: With dead ends: 119 [2021-11-09 10:41:57,330 INFO L226 Difference]: Without dead ends: 118 [2021-11-09 10:41:57,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2021-11-09 10:41:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-09 10:41:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2021-11-09 10:41:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.017391304347826) internal successors, (117), 116 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2021-11-09 10:41:57,335 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 110 [2021-11-09 10:41:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:57,336 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2021-11-09 10:41:57,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.4444444444444446) internal successors, (110), 46 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2021-11-09 10:41:57,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-09 10:41:57,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:57,337 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1, 1, 1] [2021-11-09 10:41:57,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:57,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-09 10:41:57,554 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:41:57,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:57,554 INFO L85 PathProgramCache]: Analyzing trace with hash 398942067, now seen corresponding path program 21 times [2021-11-09 10:41:57,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:57,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402599757] [2021-11-09 10:41:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:57,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:58,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:58,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402599757] [2021-11-09 10:41:58,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402599757] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:58,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746712917] [2021-11-09 10:41:58,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:41:58,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:41:58,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:41:58,293 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:41:58,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-09 10:41:59,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-09 10:41:59,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:59,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-09 10:41:59,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:59,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746712917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:41:59,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:59,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-11-09 10:41:59,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368101451] [2021-11-09 10:41:59,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-09 10:41:59,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-09 10:41:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 10:41:59,521 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:59,937 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2021-11-09 10:41:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-09 10:41:59,938 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-09 10:41:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:59,939 INFO L225 Difference]: With dead ends: 121 [2021-11-09 10:41:59,939 INFO L226 Difference]: Without dead ends: 120 [2021-11-09 10:41:59,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2021-11-09 10:41:59,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-09 10:41:59,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2021-11-09 10:41:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2021-11-09 10:41:59,944 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 112 [2021-11-09 10:41:59,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:59,945 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2021-11-09 10:41:59,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:41:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2021-11-09 10:41:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-09 10:41:59,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:59,946 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-11-09 10:41:59,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:00,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:00,171 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:00,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 22 times [2021-11-09 10:42:00,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:00,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321540117] [2021-11-09 10:42:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:00,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:00,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:00,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321540117] [2021-11-09 10:42:00,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321540117] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:00,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285142605] [2021-11-09 10:42:00,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:42:00,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:00,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:00,927 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:00,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-09 10:42:01,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:42:01,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:01,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-09 10:42:01,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:02,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285142605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:02,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:02,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-11-09 10:42:02,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159230151] [2021-11-09 10:42:02,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-09 10:42:02,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:02,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-09 10:42:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-11-09 10:42:02,082 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 48 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:02,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:02,571 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2021-11-09 10:42:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-09 10:42:02,572 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 48 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-09 10:42:02,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:02,572 INFO L225 Difference]: With dead ends: 124 [2021-11-09 10:42:02,573 INFO L226 Difference]: Without dead ends: 123 [2021-11-09 10:42:02,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2021-11-09 10:42:02,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-09 10:42:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2021-11-09 10:42:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 121 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2021-11-09 10:42:02,578 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 115 [2021-11-09 10:42:02,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:02,579 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2021-11-09 10:42:02,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 48 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2021-11-09 10:42:02,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-09 10:42:02,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:02,580 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-11-09 10:42:02,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-11-09 10:42:02,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-09 10:42:02,795 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:02,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1874335449, now seen corresponding path program 22 times [2021-11-09 10:42:02,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:02,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37882702] [2021-11-09 10:42:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:02,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:03,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:03,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37882702] [2021-11-09 10:42:03,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37882702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:03,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781551319] [2021-11-09 10:42:03,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:42:03,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:03,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:03,540 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:03,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-09 10:42:04,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:42:04,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:04,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-09 10:42:04,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:04,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781551319] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:04,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:04,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-11-09 10:42:04,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577931462] [2021-11-09 10:42:04,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-09 10:42:04,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:04,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-09 10:42:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-11-09 10:42:04,764 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:05,193 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2021-11-09 10:42:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-09 10:42:05,194 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-09 10:42:05,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:05,194 INFO L225 Difference]: With dead ends: 126 [2021-11-09 10:42:05,194 INFO L226 Difference]: Without dead ends: 125 [2021-11-09 10:42:05,195 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2021-11-09 10:42:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-09 10:42:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-11-09 10:42:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 123 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2021-11-09 10:42:05,200 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 117 [2021-11-09 10:42:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:05,200 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2021-11-09 10:42:05,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2021-11-09 10:42:05,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-09 10:42:05,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:05,202 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1] [2021-11-09 10:42:05,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:05,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:05,423 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:05,423 INFO L85 PathProgramCache]: Analyzing trace with hash 542507505, now seen corresponding path program 23 times [2021-11-09 10:42:05,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:05,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110734823] [2021-11-09 10:42:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:05,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:06,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:06,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110734823] [2021-11-09 10:42:06,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110734823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:06,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245041568] [2021-11-09 10:42:06,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:42:06,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:06,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:06,299 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:06,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-09 10:42:07,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-09 10:42:07,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:07,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-09 10:42:07,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:07,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245041568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:07,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:07,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-11-09 10:42:07,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550276208] [2021-11-09 10:42:07,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-09 10:42:07,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-09 10:42:07,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2021-11-09 10:42:07,632 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand has 50 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 50 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:08,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:08,108 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2021-11-09 10:42:08,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 10:42:08,108 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 50 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2021-11-09 10:42:08,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:08,109 INFO L225 Difference]: With dead ends: 129 [2021-11-09 10:42:08,109 INFO L226 Difference]: Without dead ends: 128 [2021-11-09 10:42:08,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2021-11-09 10:42:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-09 10:42:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2021-11-09 10:42:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 125 states have (on average 1.016) internal successors, (127), 126 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2021-11-09 10:42:08,115 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 120 [2021-11-09 10:42:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:08,116 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2021-11-09 10:42:08,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 50 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2021-11-09 10:42:08,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:42:08,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:08,117 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1, 1, 1] [2021-11-09 10:42:08,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:08,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-09 10:42:08,331 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:08,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:08,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1658671091, now seen corresponding path program 23 times [2021-11-09 10:42:08,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:08,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541114971] [2021-11-09 10:42:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:08,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:09,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:09,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541114971] [2021-11-09 10:42:09,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541114971] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:09,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903518137] [2021-11-09 10:42:09,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:42:09,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:09,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:09,068 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:09,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-09 10:42:10,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-09 10:42:10,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:10,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-09 10:42:10,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:10,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903518137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:10,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:10,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-11-09 10:42:10,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893504003] [2021-11-09 10:42:10,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-09 10:42:10,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:10,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-09 10:42:10,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2021-11-09 10:42:10,475 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:10,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:10,940 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2021-11-09 10:42:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 10:42:10,940 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-09 10:42:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:10,941 INFO L225 Difference]: With dead ends: 131 [2021-11-09 10:42:10,941 INFO L226 Difference]: Without dead ends: 130 [2021-11-09 10:42:10,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2021-11-09 10:42:10,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-09 10:42:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2021-11-09 10:42:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 1.015748031496063) internal successors, (129), 128 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2021-11-09 10:42:10,947 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 122 [2021-11-09 10:42:10,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:10,947 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2021-11-09 10:42:10,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2021-11-09 10:42:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-09 10:42:10,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:10,948 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1] [2021-11-09 10:42:10,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:11,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-09 10:42:11,163 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:11,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:11,163 INFO L85 PathProgramCache]: Analyzing trace with hash -128215131, now seen corresponding path program 24 times [2021-11-09 10:42:11,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:11,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797177919] [2021-11-09 10:42:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:11,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:12,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:12,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797177919] [2021-11-09 10:42:12,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797177919] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:12,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881086471] [2021-11-09 10:42:12,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:42:12,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:12,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:12,007 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:12,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-09 10:42:13,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-09 10:42:13,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:13,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-09 10:42:13,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:13,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881086471] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:13,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:13,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-11-09 10:42:13,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862875740] [2021-11-09 10:42:13,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-09 10:42:13,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:13,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-09 10:42:13,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2021-11-09 10:42:13,489 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 52 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:13,963 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2021-11-09 10:42:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-09 10:42:13,964 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 52 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-09 10:42:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:13,965 INFO L225 Difference]: With dead ends: 134 [2021-11-09 10:42:13,965 INFO L226 Difference]: Without dead ends: 133 [2021-11-09 10:42:13,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2021-11-09 10:42:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-09 10:42:13,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2021-11-09 10:42:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:13,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2021-11-09 10:42:13,970 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 125 [2021-11-09 10:42:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:13,971 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2021-11-09 10:42:13,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 52 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:13,971 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2021-11-09 10:42:13,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-09 10:42:13,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:13,972 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1, 1, 1] [2021-11-09 10:42:13,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:14,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:14,179 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:14,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1339312295, now seen corresponding path program 24 times [2021-11-09 10:42:14,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:14,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044711446] [2021-11-09 10:42:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:14,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:15,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:15,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044711446] [2021-11-09 10:42:15,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044711446] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:15,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110405605] [2021-11-09 10:42:15,137 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:42:15,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:15,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:15,138 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:15,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-09 10:42:16,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-09 10:42:16,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:16,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-09 10:42:16,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:16,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110405605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:16,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:16,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-11-09 10:42:16,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805071244] [2021-11-09 10:42:16,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-09 10:42:16,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:16,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-09 10:42:16,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2021-11-09 10:42:16,596 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand has 52 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 52 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:17,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:17,147 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2021-11-09 10:42:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-09 10:42:17,147 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 52 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-09 10:42:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:17,148 INFO L225 Difference]: With dead ends: 136 [2021-11-09 10:42:17,148 INFO L226 Difference]: Without dead ends: 135 [2021-11-09 10:42:17,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2021-11-09 10:42:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-09 10:42:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-11-09 10:42:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 133 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-11-09 10:42:17,154 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 127 [2021-11-09 10:42:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:17,154 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-11-09 10:42:17,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 52 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:17,154 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-11-09 10:42:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-09 10:42:17,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:17,156 INFO L513 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 1, 1, 1, 1] [2021-11-09 10:42:17,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:17,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:17,375 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash -793546127, now seen corresponding path program 25 times [2021-11-09 10:42:17,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:17,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145697526] [2021-11-09 10:42:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:17,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:18,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:18,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145697526] [2021-11-09 10:42:18,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145697526] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:18,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609645359] [2021-11-09 10:42:18,433 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:42:18,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:18,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:18,435 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:18,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-09 10:42:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:19,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 10:42:19,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:19,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609645359] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:19,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:19,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-11-09 10:42:19,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119972171] [2021-11-09 10:42:19,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-09 10:42:19,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:19,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-09 10:42:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2021-11-09 10:42:19,995 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 54 states, 53 states have (on average 2.452830188679245) internal successors, (130), 54 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:20,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:20,540 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2021-11-09 10:42:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-09 10:42:20,541 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.452830188679245) internal successors, (130), 54 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-09 10:42:20,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:20,542 INFO L225 Difference]: With dead ends: 139 [2021-11-09 10:42:20,542 INFO L226 Difference]: Without dead ends: 138 [2021-11-09 10:42:20,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2021-11-09 10:42:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-09 10:42:20,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2021-11-09 10:42:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 136 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2021-11-09 10:42:20,547 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 130 [2021-11-09 10:42:20,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:20,547 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2021-11-09 10:42:20,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.452830188679245) internal successors, (130), 54 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:20,548 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2021-11-09 10:42:20,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-09 10:42:20,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:20,549 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1, 1, 1] [2021-11-09 10:42:20,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:20,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:20,767 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1906352243, now seen corresponding path program 25 times [2021-11-09 10:42:20,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:20,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617472058] [2021-11-09 10:42:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:20,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:21,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:21,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617472058] [2021-11-09 10:42:21,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617472058] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:21,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082265634] [2021-11-09 10:42:21,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:42:21,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:21,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:21,809 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:21,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-09 10:42:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:23,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-09 10:42:23,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:23,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082265634] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:23,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:23,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-11-09 10:42:23,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634572368] [2021-11-09 10:42:23,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-09 10:42:23,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-09 10:42:23,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2021-11-09 10:42:23,592 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand has 54 states, 53 states have (on average 2.490566037735849) internal successors, (132), 54 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:24,374 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2021-11-09 10:42:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-09 10:42:24,375 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.490566037735849) internal successors, (132), 54 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-09 10:42:24,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:24,379 INFO L225 Difference]: With dead ends: 141 [2021-11-09 10:42:24,379 INFO L226 Difference]: Without dead ends: 140 [2021-11-09 10:42:24,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2021-11-09 10:42:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-09 10:42:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2021-11-09 10:42:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 138 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2021-11-09 10:42:24,383 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 132 [2021-11-09 10:42:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:24,383 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2021-11-09 10:42:24,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.490566037735849) internal successors, (132), 54 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2021-11-09 10:42:24,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-09 10:42:24,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:24,384 INFO L513 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 1, 1, 1, 1] [2021-11-09 10:42:24,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-11-09 10:42:24,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-11-09 10:42:24,585 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:24,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:24,585 INFO L85 PathProgramCache]: Analyzing trace with hash -212830427, now seen corresponding path program 26 times [2021-11-09 10:42:24,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:24,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647395023] [2021-11-09 10:42:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:24,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:25,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:25,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647395023] [2021-11-09 10:42:25,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647395023] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:25,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680577574] [2021-11-09 10:42:25,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:42:25,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:25,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:25,711 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:25,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-09 10:42:27,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:42:27,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:27,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-09 10:42:27,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:27,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680577574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:27,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:27,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2021-11-09 10:42:27,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611604318] [2021-11-09 10:42:27,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-09 10:42:27,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:27,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-09 10:42:27,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2021-11-09 10:42:27,414 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand has 56 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 56 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:28,004 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2021-11-09 10:42:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-09 10:42:28,005 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 56 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-11-09 10:42:28,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:28,006 INFO L225 Difference]: With dead ends: 144 [2021-11-09 10:42:28,006 INFO L226 Difference]: Without dead ends: 143 [2021-11-09 10:42:28,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2021-11-09 10:42:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-09 10:42:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-11-09 10:42:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 140 states have (on average 1.0142857142857142) internal successors, (142), 141 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2021-11-09 10:42:28,011 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 135 [2021-11-09 10:42:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:28,012 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2021-11-09 10:42:28,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 56 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2021-11-09 10:42:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-09 10:42:28,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:28,014 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1, 1, 1] [2021-11-09 10:42:28,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:28,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:28,239 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:28,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1628391463, now seen corresponding path program 26 times [2021-11-09 10:42:28,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:28,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462800398] [2021-11-09 10:42:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:28,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:29,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:29,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462800398] [2021-11-09 10:42:29,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462800398] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:29,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832747349] [2021-11-09 10:42:29,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:42:29,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:29,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:29,217 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:29,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-09 10:42:30,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:42:30,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:30,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-09 10:42:30,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:30,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832747349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:30,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:30,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2021-11-09 10:42:30,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187524333] [2021-11-09 10:42:30,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-09 10:42:30,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:30,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-09 10:42:30,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2021-11-09 10:42:30,817 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand has 56 states, 55 states have (on average 2.4909090909090907) internal successors, (137), 56 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:31,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:31,411 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2021-11-09 10:42:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-09 10:42:31,412 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.4909090909090907) internal successors, (137), 56 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-09 10:42:31,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:31,413 INFO L225 Difference]: With dead ends: 146 [2021-11-09 10:42:31,413 INFO L226 Difference]: Without dead ends: 145 [2021-11-09 10:42:31,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2021-11-09 10:42:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-09 10:42:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2021-11-09 10:42:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2021-11-09 10:42:31,418 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 137 [2021-11-09 10:42:31,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:31,419 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2021-11-09 10:42:31,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.4909090909090907) internal successors, (137), 56 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2021-11-09 10:42:31,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-09 10:42:31,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:31,420 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 1, 1, 1, 1] [2021-11-09 10:42:31,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:31,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:31,647 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:31,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:31,647 INFO L85 PathProgramCache]: Analyzing trace with hash -245480719, now seen corresponding path program 27 times [2021-11-09 10:42:31,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:31,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284104546] [2021-11-09 10:42:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:31,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:32,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:32,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284104546] [2021-11-09 10:42:32,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284104546] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:32,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476581943] [2021-11-09 10:42:32,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:42:32,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:32,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:32,656 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:32,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-09 10:42:34,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-09 10:42:34,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:34,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-09 10:42:34,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:34,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476581943] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:34,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:34,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2021-11-09 10:42:34,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192241281] [2021-11-09 10:42:34,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-09 10:42:34,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:34,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-09 10:42:34,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2021-11-09 10:42:34,513 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand has 58 states, 57 states have (on average 2.456140350877193) internal successors, (140), 58 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:35,253 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2021-11-09 10:42:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-09 10:42:35,254 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.456140350877193) internal successors, (140), 58 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-09 10:42:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:35,255 INFO L225 Difference]: With dead ends: 149 [2021-11-09 10:42:35,255 INFO L226 Difference]: Without dead ends: 148 [2021-11-09 10:42:35,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2021-11-09 10:42:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-09 10:42:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2021-11-09 10:42:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 145 states have (on average 1.013793103448276) internal successors, (147), 146 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2021-11-09 10:42:35,261 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 140 [2021-11-09 10:42:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:35,261 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2021-11-09 10:42:35,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.456140350877193) internal successors, (140), 58 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2021-11-09 10:42:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-09 10:42:35,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:35,263 INFO L513 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1, 1, 1] [2021-11-09 10:42:35,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:35,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-09 10:42:35,475 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:35,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash 316231923, now seen corresponding path program 27 times [2021-11-09 10:42:35,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:35,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115881747] [2021-11-09 10:42:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:35,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:36,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:36,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115881747] [2021-11-09 10:42:36,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115881747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:36,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350207781] [2021-11-09 10:42:36,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:42:36,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:36,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:36,501 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:36,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-09 10:42:37,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-09 10:42:37,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:37,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-09 10:42:37,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:38,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350207781] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:38,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:38,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2021-11-09 10:42:38,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490296766] [2021-11-09 10:42:38,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-09 10:42:38,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-09 10:42:38,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2021-11-09 10:42:38,335 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand has 58 states, 57 states have (on average 2.491228070175439) internal successors, (142), 58 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:39,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:39,004 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2021-11-09 10:42:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-09 10:42:39,005 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.491228070175439) internal successors, (142), 58 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-09 10:42:39,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:39,005 INFO L225 Difference]: With dead ends: 151 [2021-11-09 10:42:39,006 INFO L226 Difference]: Without dead ends: 150 [2021-11-09 10:42:39,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2021-11-09 10:42:39,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-09 10:42:39,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2021-11-09 10:42:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2021-11-09 10:42:39,010 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 142 [2021-11-09 10:42:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:39,010 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2021-11-09 10:42:39,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.491228070175439) internal successors, (142), 58 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2021-11-09 10:42:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-09 10:42:39,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:39,012 INFO L513 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 1, 1, 1, 1] [2021-11-09 10:42:39,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:39,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-09 10:42:39,227 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:39,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:39,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2001991333, now seen corresponding path program 28 times [2021-11-09 10:42:39,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:39,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998254977] [2021-11-09 10:42:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:39,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:40,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:40,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998254977] [2021-11-09 10:42:40,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998254977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:40,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129035578] [2021-11-09 10:42:40,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:42:40,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:40,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:40,383 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:40,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-09 10:42:41,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:42:41,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:41,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-09 10:42:41,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:42,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129035578] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:42,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:42,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2021-11-09 10:42:42,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570204343] [2021-11-09 10:42:42,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-09 10:42:42,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-09 10:42:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2021-11-09 10:42:42,231 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand has 60 states, 59 states have (on average 2.457627118644068) internal successors, (145), 60 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:42,896 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2021-11-09 10:42:42,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-09 10:42:42,897 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.457627118644068) internal successors, (145), 60 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-11-09 10:42:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:42,897 INFO L225 Difference]: With dead ends: 154 [2021-11-09 10:42:42,898 INFO L226 Difference]: Without dead ends: 153 [2021-11-09 10:42:42,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2021-11-09 10:42:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-09 10:42:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-11-09 10:42:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 151 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:42,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2021-11-09 10:42:42,901 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 145 [2021-11-09 10:42:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:42,902 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2021-11-09 10:42:42,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.457627118644068) internal successors, (145), 60 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:42,902 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2021-11-09 10:42:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-09 10:42:42,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:42,902 INFO L513 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1, 1, 1] [2021-11-09 10:42:42,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:43,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-09 10:42:43,103 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:43,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:43,104 INFO L85 PathProgramCache]: Analyzing trace with hash -231675993, now seen corresponding path program 28 times [2021-11-09 10:42:43,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:43,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841383868] [2021-11-09 10:42:43,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:43,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:44,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:44,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841383868] [2021-11-09 10:42:44,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841383868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:44,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924367987] [2021-11-09 10:42:44,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:42:44,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:44,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:44,221 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:44,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-09 10:42:45,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:42:45,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:45,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-09 10:42:45,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:46,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924367987] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:46,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:46,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2021-11-09 10:42:46,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190155987] [2021-11-09 10:42:46,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-09 10:42:46,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:46,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-09 10:42:46,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2021-11-09 10:42:46,019 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand has 60 states, 59 states have (on average 2.4915254237288136) internal successors, (147), 60 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:46,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:46,738 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2021-11-09 10:42:46,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-09 10:42:46,739 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.4915254237288136) internal successors, (147), 60 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2021-11-09 10:42:46,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:46,740 INFO L225 Difference]: With dead ends: 156 [2021-11-09 10:42:46,740 INFO L226 Difference]: Without dead ends: 155 [2021-11-09 10:42:46,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2021-11-09 10:42:46,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-09 10:42:46,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-11-09 10:42:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 152 states have (on average 1.013157894736842) internal successors, (154), 153 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2021-11-09 10:42:46,745 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 147 [2021-11-09 10:42:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:46,745 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2021-11-09 10:42:46,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.4915254237288136) internal successors, (147), 60 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2021-11-09 10:42:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-09 10:42:46,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:46,747 INFO L513 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 1, 1, 1, 1] [2021-11-09 10:42:46,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:46,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-09 10:42:46,963 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash 152990577, now seen corresponding path program 29 times [2021-11-09 10:42:46,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:46,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702079165] [2021-11-09 10:42:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:46,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:48,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:48,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702079165] [2021-11-09 10:42:48,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702079165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:48,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172644179] [2021-11-09 10:42:48,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:42:48,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:48,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:48,271 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:48,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-09 10:42:49,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-09 10:42:49,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:49,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-09 10:42:49,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:50,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172644179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:50,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:50,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2021-11-09 10:42:50,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509623251] [2021-11-09 10:42:50,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-09 10:42:50,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:50,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-09 10:42:50,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2021-11-09 10:42:50,253 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand has 62 states, 61 states have (on average 2.459016393442623) internal successors, (150), 62 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:50,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:50,914 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2021-11-09 10:42:50,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-09 10:42:50,919 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.459016393442623) internal successors, (150), 62 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-11-09 10:42:50,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:50,920 INFO L225 Difference]: With dead ends: 159 [2021-11-09 10:42:50,920 INFO L226 Difference]: Without dead ends: 158 [2021-11-09 10:42:50,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2021-11-09 10:42:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-09 10:42:50,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2021-11-09 10:42:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 156 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2021-11-09 10:42:50,924 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 150 [2021-11-09 10:42:50,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:50,924 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2021-11-09 10:42:50,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.459016393442623) internal successors, (150), 62 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:50,924 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2021-11-09 10:42:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-09 10:42:50,925 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:50,925 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1, 1, 1] [2021-11-09 10:42:50,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-11-09 10:42:51,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:51,126 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:51,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash 995058035, now seen corresponding path program 29 times [2021-11-09 10:42:51,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:51,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262408231] [2021-11-09 10:42:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:51,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:52,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:52,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262408231] [2021-11-09 10:42:52,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262408231] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:52,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078985476] [2021-11-09 10:42:52,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:42:52,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:52,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:52,399 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:52,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-09 10:42:54,009 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-09 10:42:54,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:54,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-09 10:42:54,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:54,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078985476] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:54,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:54,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2021-11-09 10:42:54,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058870571] [2021-11-09 10:42:54,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-09 10:42:54,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-09 10:42:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2021-11-09 10:42:54,404 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand has 62 states, 61 states have (on average 2.4918032786885247) internal successors, (152), 62 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:55,060 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2021-11-09 10:42:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-09 10:42:55,060 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.4918032786885247) internal successors, (152), 62 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2021-11-09 10:42:55,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:55,061 INFO L225 Difference]: With dead ends: 161 [2021-11-09 10:42:55,061 INFO L226 Difference]: Without dead ends: 160 [2021-11-09 10:42:55,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2021-11-09 10:42:55,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-09 10:42:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2021-11-09 10:42:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.0127388535031847) internal successors, (159), 158 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2021-11-09 10:42:55,065 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 152 [2021-11-09 10:42:55,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:55,065 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2021-11-09 10:42:55,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.4918032786885247) internal successors, (152), 62 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2021-11-09 10:42:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-09 10:42:55,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:55,066 INFO L513 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1] [2021-11-09 10:42:55,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:55,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:55,275 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:55,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash -90302939, now seen corresponding path program 30 times [2021-11-09 10:42:55,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:55,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780691278] [2021-11-09 10:42:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:55,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:56,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:56,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780691278] [2021-11-09 10:42:56,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780691278] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:56,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106350430] [2021-11-09 10:42:56,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:42:56,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:42:56,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:56,660 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:42:56,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-09 10:42:58,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-09 10:42:58,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:58,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-09 10:42:58,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:58,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106350430] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:42:58,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:42:58,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2021-11-09 10:42:58,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89988639] [2021-11-09 10:42:58,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-09 10:42:58,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-09 10:42:58,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2021-11-09 10:42:58,730 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand has 64 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 64 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:59,586 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2021-11-09 10:42:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-09 10:42:59,586 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 64 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2021-11-09 10:42:59,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:59,587 INFO L225 Difference]: With dead ends: 164 [2021-11-09 10:42:59,587 INFO L226 Difference]: Without dead ends: 163 [2021-11-09 10:42:59,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2574, Invalid=6356, Unknown=0, NotChecked=0, Total=8930 [2021-11-09 10:42:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-09 10:42:59,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-11-09 10:42:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-11-09 10:42:59,591 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 155 [2021-11-09 10:42:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:59,591 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-11-09 10:42:59,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 64 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-11-09 10:42:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-09 10:42:59,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:59,593 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1] [2021-11-09 10:42:59,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-11-09 10:42:59,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-11-09 10:42:59,815 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:42:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash -881776857, now seen corresponding path program 30 times [2021-11-09 10:42:59,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:59,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610716259] [2021-11-09 10:42:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:59,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:00,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:00,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610716259] [2021-11-09 10:43:00,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610716259] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:00,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455497209] [2021-11-09 10:43:00,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:43:00,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:00,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:00,998 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:00,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-09 10:43:02,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-09 10:43:02,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:43:02,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-09 10:43:02,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:03,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455497209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:03,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:03,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2021-11-09 10:43:03,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554075103] [2021-11-09 10:43:03,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-09 10:43:03,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:03,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-09 10:43:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2021-11-09 10:43:03,153 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 64 states, 63 states have (on average 2.492063492063492) internal successors, (157), 64 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:03,988 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2021-11-09 10:43:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-09 10:43:03,989 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.492063492063492) internal successors, (157), 64 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2021-11-09 10:43:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:03,990 INFO L225 Difference]: With dead ends: 166 [2021-11-09 10:43:03,990 INFO L226 Difference]: Without dead ends: 165 [2021-11-09 10:43:03,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2574, Invalid=6356, Unknown=0, NotChecked=0, Total=8930 [2021-11-09 10:43:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-09 10:43:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-11-09 10:43:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 163 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2021-11-09 10:43:03,995 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 157 [2021-11-09 10:43:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:03,995 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2021-11-09 10:43:03,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.492063492063492) internal successors, (157), 64 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2021-11-09 10:43:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-09 10:43:03,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:03,997 INFO L513 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 1, 1, 1, 1] [2021-11-09 10:43:04,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:04,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:04,219 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -994311183, now seen corresponding path program 31 times [2021-11-09 10:43:04,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:04,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908534923] [2021-11-09 10:43:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:04,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:05,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:05,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908534923] [2021-11-09 10:43:05,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908534923] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:05,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017767564] [2021-11-09 10:43:05,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:43:05,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:05,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:05,445 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:05,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-09 10:43:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:07,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-09 10:43:07,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:07,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017767564] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:07,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:07,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2021-11-09 10:43:07,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309693459] [2021-11-09 10:43:07,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 10:43:07,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:07,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 10:43:07,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 10:43:07,748 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand has 66 states, 65 states have (on average 2.4615384615384617) internal successors, (160), 66 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:08,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:08,638 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2021-11-09 10:43:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-09 10:43:08,638 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.4615384615384617) internal successors, (160), 66 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2021-11-09 10:43:08,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:08,640 INFO L225 Difference]: With dead ends: 169 [2021-11-09 10:43:08,640 INFO L226 Difference]: Without dead ends: 168 [2021-11-09 10:43:08,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2737, Invalid=6769, Unknown=0, NotChecked=0, Total=9506 [2021-11-09 10:43:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-09 10:43:08,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2021-11-09 10:43:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2021-11-09 10:43:08,646 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 160 [2021-11-09 10:43:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:08,646 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2021-11-09 10:43:08,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.4615384615384617) internal successors, (160), 66 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2021-11-09 10:43:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-09 10:43:08,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:08,648 INFO L513 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 1, 1, 1, 1] [2021-11-09 10:43:08,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:08,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:08,859 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:08,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2050305549, now seen corresponding path program 31 times [2021-11-09 10:43:08,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:08,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410506389] [2021-11-09 10:43:08,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:08,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 0 proven. 2449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:10,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:10,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410506389] [2021-11-09 10:43:10,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410506389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:10,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806797704] [2021-11-09 10:43:10,064 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:43:10,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:10,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:10,092 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:10,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-09 10:43:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:11,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-09 10:43:11,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:12,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 0 proven. 2449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:12,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806797704] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:12,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:12,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2021-11-09 10:43:12,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310779734] [2021-11-09 10:43:12,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 10:43:12,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:12,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 10:43:12,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 10:43:12,324 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand has 66 states, 65 states have (on average 2.4923076923076923) internal successors, (162), 66 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:13,338 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2021-11-09 10:43:13,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-09 10:43:13,339 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.4923076923076923) internal successors, (162), 66 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2021-11-09 10:43:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:13,340 INFO L225 Difference]: With dead ends: 171 [2021-11-09 10:43:13,341 INFO L226 Difference]: Without dead ends: 170 [2021-11-09 10:43:13,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2737, Invalid=6769, Unknown=0, NotChecked=0, Total=9506 [2021-11-09 10:43:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-09 10:43:13,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2021-11-09 10:43:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 168 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2021-11-09 10:43:13,346 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 162 [2021-11-09 10:43:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:13,347 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2021-11-09 10:43:13,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.4923076923076923) internal successors, (162), 66 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2021-11-09 10:43:13,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-09 10:43:13,349 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:13,349 INFO L513 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 1, 1, 1, 1] [2021-11-09 10:43:13,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:13,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-11-09 10:43:13,550 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:13,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1922640475, now seen corresponding path program 32 times [2021-11-09 10:43:13,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:13,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921699251] [2021-11-09 10:43:13,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:13,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:15,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:15,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921699251] [2021-11-09 10:43:15,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921699251] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:15,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576161115] [2021-11-09 10:43:15,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:43:15,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:15,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:15,061 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:15,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-09 10:43:17,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:43:17,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:43:17,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-09 10:43:17,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:17,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576161115] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:17,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:17,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2021-11-09 10:43:17,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713779730] [2021-11-09 10:43:17,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-09 10:43:17,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:17,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-09 10:43:17,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2021-11-09 10:43:17,696 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand has 68 states, 67 states have (on average 2.462686567164179) internal successors, (165), 68 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:18,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:18,650 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2021-11-09 10:43:18,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-09 10:43:18,651 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.462686567164179) internal successors, (165), 68 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-09 10:43:18,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:18,652 INFO L225 Difference]: With dead ends: 174 [2021-11-09 10:43:18,652 INFO L226 Difference]: Without dead ends: 173 [2021-11-09 10:43:18,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2905, Invalid=7195, Unknown=0, NotChecked=0, Total=10100 [2021-11-09 10:43:18,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-09 10:43:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-11-09 10:43:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 170 states have (on average 1.011764705882353) internal successors, (172), 171 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2021-11-09 10:43:18,657 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 165 [2021-11-09 10:43:18,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:18,657 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2021-11-09 10:43:18,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.462686567164179) internal successors, (165), 68 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:18,657 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2021-11-09 10:43:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-09 10:43:18,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:18,659 INFO L513 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 1, 1, 1, 1] [2021-11-09 10:43:18,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:18,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-11-09 10:43:18,882 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:18,882 INFO L85 PathProgramCache]: Analyzing trace with hash -821557593, now seen corresponding path program 32 times [2021-11-09 10:43:18,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:18,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980933887] [2021-11-09 10:43:18,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:18,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:20,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:20,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980933887] [2021-11-09 10:43:20,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980933887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:20,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153984095] [2021-11-09 10:43:20,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:43:20,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:20,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:20,448 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:20,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-09 10:43:22,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:43:22,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:43:22,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-09 10:43:22,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:23,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153984095] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:23,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:23,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2021-11-09 10:43:23,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228928272] [2021-11-09 10:43:23,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-09 10:43:23,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:23,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-09 10:43:23,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2021-11-09 10:43:23,033 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand has 68 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 68 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:23,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:23,800 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2021-11-09 10:43:23,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-09 10:43:23,801 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 68 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2021-11-09 10:43:23,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:23,802 INFO L225 Difference]: With dead ends: 176 [2021-11-09 10:43:23,802 INFO L226 Difference]: Without dead ends: 175 [2021-11-09 10:43:23,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2905, Invalid=7195, Unknown=0, NotChecked=0, Total=10100 [2021-11-09 10:43:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-09 10:43:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-11-09 10:43:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2021-11-09 10:43:23,806 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 167 [2021-11-09 10:43:23,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:23,807 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2021-11-09 10:43:23,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 68 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:23,807 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2021-11-09 10:43:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-09 10:43:23,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:23,808 INFO L513 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 1, 1, 1, 1] [2021-11-09 10:43:23,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-11-09 10:43:24,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-11-09 10:43:24,008 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:24,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:24,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1996420209, now seen corresponding path program 33 times [2021-11-09 10:43:24,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:24,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626462072] [2021-11-09 10:43:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:24,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:25,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:25,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626462072] [2021-11-09 10:43:25,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626462072] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:25,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399185450] [2021-11-09 10:43:25,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:43:25,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:25,486 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:25,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-09 10:43:27,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-09 10:43:27,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:43:27,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-09 10:43:27,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:28,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399185450] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:28,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:28,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2021-11-09 10:43:28,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349613170] [2021-11-09 10:43:28,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-09 10:43:28,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-09 10:43:28,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2021-11-09 10:43:28,098 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand has 70 states, 69 states have (on average 2.463768115942029) internal successors, (170), 70 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:29,086 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2021-11-09 10:43:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-09 10:43:29,086 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.463768115942029) internal successors, (170), 70 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2021-11-09 10:43:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:29,087 INFO L225 Difference]: With dead ends: 179 [2021-11-09 10:43:29,087 INFO L226 Difference]: Without dead ends: 178 [2021-11-09 10:43:29,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3078, Invalid=7634, Unknown=0, NotChecked=0, Total=10712 [2021-11-09 10:43:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-09 10:43:29,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2021-11-09 10:43:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.0114285714285713) internal successors, (177), 176 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:29,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2021-11-09 10:43:29,094 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 170 [2021-11-09 10:43:29,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:29,095 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2021-11-09 10:43:29,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.463768115942029) internal successors, (170), 70 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:29,095 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2021-11-09 10:43:29,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-09 10:43:29,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:29,097 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 1, 1, 1, 1] [2021-11-09 10:43:29,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:29,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-09 10:43:29,323 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1290558861, now seen corresponding path program 33 times [2021-11-09 10:43:29,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:29,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481285857] [2021-11-09 10:43:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:29,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 0 proven. 2772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:30,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:30,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481285857] [2021-11-09 10:43:30,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481285857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:30,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586313157] [2021-11-09 10:43:30,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:43:30,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:30,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:30,867 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:30,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-09 10:43:33,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-09 10:43:33,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:43:33,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-09 10:43:33,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 0 proven. 2772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:33,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586313157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:33,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:33,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2021-11-09 10:43:33,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821500749] [2021-11-09 10:43:33,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-09 10:43:33,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:33,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-09 10:43:33,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2021-11-09 10:43:33,477 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand has 70 states, 69 states have (on average 2.4927536231884058) internal successors, (172), 70 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:34,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:34,296 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2021-11-09 10:43:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-09 10:43:34,297 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.4927536231884058) internal successors, (172), 70 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-11-09 10:43:34,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:34,298 INFO L225 Difference]: With dead ends: 181 [2021-11-09 10:43:34,298 INFO L226 Difference]: Without dead ends: 180 [2021-11-09 10:43:34,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3078, Invalid=7634, Unknown=0, NotChecked=0, Total=10712 [2021-11-09 10:43:34,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-09 10:43:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2021-11-09 10:43:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 178 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:34,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2021-11-09 10:43:34,305 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 172 [2021-11-09 10:43:34,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:34,305 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2021-11-09 10:43:34,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.4927536231884058) internal successors, (172), 70 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2021-11-09 10:43:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 10:43:34,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:34,307 INFO L513 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 1, 1, 1, 1] [2021-11-09 10:43:34,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-11-09 10:43:34,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:34,515 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:34,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:34,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1508259109, now seen corresponding path program 34 times [2021-11-09 10:43:34,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:34,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77075397] [2021-11-09 10:43:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:34,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:35,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:35,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77075397] [2021-11-09 10:43:35,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77075397] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:35,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709950640] [2021-11-09 10:43:35,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:43:35,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:35,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:35,946 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:35,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-09 10:43:37,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:43:37,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:43:37,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-09 10:43:37,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:38,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709950640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:38,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:38,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2021-11-09 10:43:38,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752124998] [2021-11-09 10:43:38,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-11-09 10:43:38,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:38,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-11-09 10:43:38,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2021-11-09 10:43:38,478 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand has 72 states, 71 states have (on average 2.464788732394366) internal successors, (175), 72 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:39,364 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2021-11-09 10:43:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-09 10:43:39,365 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.464788732394366) internal successors, (175), 72 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-11-09 10:43:39,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:39,366 INFO L225 Difference]: With dead ends: 184 [2021-11-09 10:43:39,366 INFO L226 Difference]: Without dead ends: 183 [2021-11-09 10:43:39,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3256, Invalid=8086, Unknown=0, NotChecked=0, Total=11342 [2021-11-09 10:43:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-09 10:43:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-11-09 10:43:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.011111111111111) internal successors, (182), 181 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-11-09 10:43:39,371 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 175 [2021-11-09 10:43:39,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:39,372 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-11-09 10:43:39,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.464788732394366) internal successors, (175), 72 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-11-09 10:43:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-09 10:43:39,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:39,373 INFO L513 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 1, 1, 1, 1] [2021-11-09 10:43:39,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-11-09 10:43:39,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:39,587 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:39,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:39,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2033026599, now seen corresponding path program 34 times [2021-11-09 10:43:39,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:39,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515214230] [2021-11-09 10:43:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:39,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 0 proven. 2941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:41,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:41,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515214230] [2021-11-09 10:43:41,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515214230] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:41,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245925568] [2021-11-09 10:43:41,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:43:41,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:41,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:41,087 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:41,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-09 10:43:43,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:43:43,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:43:43,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-09 10:43:43,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 0 proven. 2941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:43,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245925568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:43,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:43,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2021-11-09 10:43:43,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457402567] [2021-11-09 10:43:43,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-11-09 10:43:43,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:43,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-11-09 10:43:43,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2021-11-09 10:43:43,641 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 72 states, 71 states have (on average 2.492957746478873) internal successors, (177), 72 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:44,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:44,584 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2021-11-09 10:43:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-09 10:43:44,584 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.492957746478873) internal successors, (177), 72 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-11-09 10:43:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:44,586 INFO L225 Difference]: With dead ends: 186 [2021-11-09 10:43:44,586 INFO L226 Difference]: Without dead ends: 185 [2021-11-09 10:43:44,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3256, Invalid=8086, Unknown=0, NotChecked=0, Total=11342 [2021-11-09 10:43:44,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-09 10:43:44,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-11-09 10:43:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 182 states have (on average 1.010989010989011) internal successors, (184), 183 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2021-11-09 10:43:44,591 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 177 [2021-11-09 10:43:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:44,591 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2021-11-09 10:43:44,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.492957746478873) internal successors, (177), 72 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:44,591 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2021-11-09 10:43:44,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-09 10:43:44,592 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:44,593 INFO L513 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 1, 1, 1, 1] [2021-11-09 10:43:44,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-11-09 10:43:44,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:44,793 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1733344015, now seen corresponding path program 35 times [2021-11-09 10:43:44,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:44,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963262305] [2021-11-09 10:43:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:44,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:46,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:46,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963262305] [2021-11-09 10:43:46,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963262305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:46,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320625612] [2021-11-09 10:43:46,387 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:43:46,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:46,388 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:46,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-09 10:43:48,605 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-09 10:43:48,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:43:48,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-09 10:43:48,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:49,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320625612] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:49,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:49,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2021-11-09 10:43:49,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27458012] [2021-11-09 10:43:49,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-11-09 10:43:49,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:49,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-11-09 10:43:49,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2021-11-09 10:43:49,214 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand has 74 states, 73 states have (on average 2.4657534246575343) internal successors, (180), 74 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:50,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:50,263 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2021-11-09 10:43:50,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-11-09 10:43:50,263 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.4657534246575343) internal successors, (180), 74 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2021-11-09 10:43:50,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:50,264 INFO L225 Difference]: With dead ends: 189 [2021-11-09 10:43:50,264 INFO L226 Difference]: Without dead ends: 188 [2021-11-09 10:43:50,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3439, Invalid=8551, Unknown=0, NotChecked=0, Total=11990 [2021-11-09 10:43:50,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-09 10:43:50,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2021-11-09 10:43:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 1.0108108108108107) internal successors, (187), 186 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2021-11-09 10:43:50,268 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 180 [2021-11-09 10:43:50,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:50,269 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2021-11-09 10:43:50,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.4657534246575343) internal successors, (180), 74 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2021-11-09 10:43:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-09 10:43:50,270 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:50,270 INFO L513 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 1, 1, 1, 1] [2021-11-09 10:43:50,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:50,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:50,495 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:50,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:50,495 INFO L85 PathProgramCache]: Analyzing trace with hash 703714035, now seen corresponding path program 35 times [2021-11-09 10:43:50,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:50,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792963765] [2021-11-09 10:43:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:50,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3115 backedges. 0 proven. 3115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:52,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:52,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792963765] [2021-11-09 10:43:52,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792963765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:52,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89998649] [2021-11-09 10:43:52,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:43:52,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:52,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:52,008 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:52,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-11-09 10:43:54,272 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-09 10:43:54,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:43:54,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-09 10:43:54,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3115 backedges. 0 proven. 3115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:54,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89998649] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:54,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:54,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2021-11-09 10:43:54,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340403367] [2021-11-09 10:43:54,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-11-09 10:43:54,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:54,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-11-09 10:43:54,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2021-11-09 10:43:54,758 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand has 74 states, 73 states have (on average 2.493150684931507) internal successors, (182), 74 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:55,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:55,678 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2021-11-09 10:43:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-11-09 10:43:55,678 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.493150684931507) internal successors, (182), 74 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2021-11-09 10:43:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:55,679 INFO L225 Difference]: With dead ends: 191 [2021-11-09 10:43:55,679 INFO L226 Difference]: Without dead ends: 190 [2021-11-09 10:43:55,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3439, Invalid=8551, Unknown=0, NotChecked=0, Total=11990 [2021-11-09 10:43:55,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-09 10:43:55,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2021-11-09 10:43:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 187 states have (on average 1.0106951871657754) internal successors, (189), 188 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2021-11-09 10:43:55,684 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 182 [2021-11-09 10:43:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:55,684 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2021-11-09 10:43:55,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.493150684931507) internal successors, (182), 74 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2021-11-09 10:43:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-09 10:43:55,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:55,685 INFO L513 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 1, 1, 1, 1] [2021-11-09 10:43:55,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:55,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:55,885 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:43:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:55,886 INFO L85 PathProgramCache]: Analyzing trace with hash 609498277, now seen corresponding path program 36 times [2021-11-09 10:43:55,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:55,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856222945] [2021-11-09 10:43:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:55,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:57,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:57,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856222945] [2021-11-09 10:43:57,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856222945] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:57,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015341546] [2021-11-09 10:43:57,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:43:57,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:57,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:57,452 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:57,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-11-09 10:43:59,907 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-09 10:43:59,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:43:59,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-09 10:43:59,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:00,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015341546] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:00,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:44:00,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2021-11-09 10:44:00,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055138603] [2021-11-09 10:44:00,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-09 10:44:00,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:00,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-09 10:44:00,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2021-11-09 10:44:00,441 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand has 76 states, 75 states have (on average 2.466666666666667) internal successors, (185), 76 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:01,571 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2021-11-09 10:44:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-09 10:44:01,572 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.466666666666667) internal successors, (185), 76 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2021-11-09 10:44:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:01,573 INFO L225 Difference]: With dead ends: 194 [2021-11-09 10:44:01,573 INFO L226 Difference]: Without dead ends: 193 [2021-11-09 10:44:01,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3627, Invalid=9029, Unknown=0, NotChecked=0, Total=12656 [2021-11-09 10:44:01,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-09 10:44:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2021-11-09 10:44:01,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2021-11-09 10:44:01,578 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 185 [2021-11-09 10:44:01,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:01,579 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2021-11-09 10:44:01,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.466666666666667) internal successors, (185), 76 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2021-11-09 10:44:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-09 10:44:01,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:01,580 INFO L513 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 1, 1, 1, 1] [2021-11-09 10:44:01,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-11-09 10:44:01,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-11-09 10:44:01,783 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:44:01,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:01,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1612293543, now seen corresponding path program 36 times [2021-11-09 10:44:01,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:01,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739780124] [2021-11-09 10:44:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:01,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 3294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:03,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:03,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739780124] [2021-11-09 10:44:03,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739780124] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:03,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160463263] [2021-11-09 10:44:03,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:44:03,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:03,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:03,594 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:03,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-11-09 10:44:06,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-09 10:44:06,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:44:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-09 10:44:06,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 3294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:07,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160463263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:07,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:44:07,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2021-11-09 10:44:07,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104332352] [2021-11-09 10:44:07,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-09 10:44:07,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:07,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-09 10:44:07,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2021-11-09 10:44:07,041 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand has 76 states, 75 states have (on average 2.493333333333333) internal successors, (187), 76 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:08,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:08,166 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2021-11-09 10:44:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-09 10:44:08,167 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.493333333333333) internal successors, (187), 76 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2021-11-09 10:44:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:08,168 INFO L225 Difference]: With dead ends: 196 [2021-11-09 10:44:08,168 INFO L226 Difference]: Without dead ends: 195 [2021-11-09 10:44:08,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3627, Invalid=9029, Unknown=0, NotChecked=0, Total=12656 [2021-11-09 10:44:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-09 10:44:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-11-09 10:44:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 193 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-11-09 10:44:08,176 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 187 [2021-11-09 10:44:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:08,177 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-11-09 10:44:08,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.493333333333333) internal successors, (187), 76 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-11-09 10:44:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-09 10:44:08,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:08,179 INFO L513 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1] [2021-11-09 10:44:08,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:08,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-11-09 10:44:08,395 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:44:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:08,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1217721713, now seen corresponding path program 37 times [2021-11-09 10:44:08,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:08,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393912409] [2021-11-09 10:44:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:08,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:10,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:10,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393912409] [2021-11-09 10:44:10,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393912409] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:10,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240193671] [2021-11-09 10:44:10,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:44:10,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:10,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:10,453 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:10,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-11-09 10:44:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:13,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-09 10:44:13,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:13,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240193671] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:13,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:44:13,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2021-11-09 10:44:13,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050334020] [2021-11-09 10:44:13,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-11-09 10:44:13,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-11-09 10:44:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2021-11-09 10:44:13,888 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 78 states, 77 states have (on average 2.4675324675324677) internal successors, (190), 78 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:15,084 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2021-11-09 10:44:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-09 10:44:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.4675324675324677) internal successors, (190), 78 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2021-11-09 10:44:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:15,086 INFO L225 Difference]: With dead ends: 199 [2021-11-09 10:44:15,086 INFO L226 Difference]: Without dead ends: 198 [2021-11-09 10:44:15,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3820, Invalid=9520, Unknown=0, NotChecked=0, Total=13340 [2021-11-09 10:44:15,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-09 10:44:15,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2021-11-09 10:44:15,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2021-11-09 10:44:15,094 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 190 [2021-11-09 10:44:15,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:15,094 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2021-11-09 10:44:15,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.4675324675324677) internal successors, (190), 78 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:15,095 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2021-11-09 10:44:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-09 10:44:15,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:15,097 INFO L513 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 1, 1, 1, 1] [2021-11-09 10:44:15,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-11-09 10:44:15,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:15,311 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:44:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:15,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1999463283, now seen corresponding path program 37 times [2021-11-09 10:44:15,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:15,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354678214] [2021-11-09 10:44:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:15,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3478 backedges. 0 proven. 3478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:17,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:17,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354678214] [2021-11-09 10:44:17,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354678214] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:17,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457092082] [2021-11-09 10:44:17,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:44:17,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:17,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:17,131 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:17,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-11-09 10:44:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:19,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-09 10:44:19,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3478 backedges. 0 proven. 3478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:20,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457092082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:20,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:44:20,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2021-11-09 10:44:20,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452380201] [2021-11-09 10:44:20,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-11-09 10:44:20,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-11-09 10:44:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2021-11-09 10:44:20,447 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand has 78 states, 77 states have (on average 2.4935064935064934) internal successors, (192), 78 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:21,612 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2021-11-09 10:44:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-09 10:44:21,613 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.4935064935064934) internal successors, (192), 78 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2021-11-09 10:44:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:21,614 INFO L225 Difference]: With dead ends: 201 [2021-11-09 10:44:21,614 INFO L226 Difference]: Without dead ends: 200 [2021-11-09 10:44:21,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3820, Invalid=9520, Unknown=0, NotChecked=0, Total=13340 [2021-11-09 10:44:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-09 10:44:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2021-11-09 10:44:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 198 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2021-11-09 10:44:21,619 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 192 [2021-11-09 10:44:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:21,620 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2021-11-09 10:44:21,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.4935064935064934) internal successors, (192), 78 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:21,620 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2021-11-09 10:44:21,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-09 10:44:21,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:21,622 INFO L513 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1] [2021-11-09 10:44:21,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-11-09 10:44:21,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:21,835 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:44:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash -890711003, now seen corresponding path program 38 times [2021-11-09 10:44:21,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:21,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699642256] [2021-11-09 10:44:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:21,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:23,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:23,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699642256] [2021-11-09 10:44:23,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699642256] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:23,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195082046] [2021-11-09 10:44:23,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:44:23,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:23,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:23,599 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:23,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-09 10:44:26,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:44:26,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:44:26,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-09 10:44:26,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:26,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195082046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:26,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:44:26,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2021-11-09 10:44:26,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129589400] [2021-11-09 10:44:26,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-11-09 10:44:26,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:26,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-11-09 10:44:26,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2021-11-09 10:44:26,872 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand has 80 states, 79 states have (on average 2.4683544303797467) internal successors, (195), 80 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:28,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:28,164 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2021-11-09 10:44:28,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-09 10:44:28,165 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.4683544303797467) internal successors, (195), 80 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2021-11-09 10:44:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:28,166 INFO L225 Difference]: With dead ends: 204 [2021-11-09 10:44:28,166 INFO L226 Difference]: Without dead ends: 203 [2021-11-09 10:44:28,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4018, Invalid=10024, Unknown=0, NotChecked=0, Total=14042 [2021-11-09 10:44:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-09 10:44:28,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-11-09 10:44:28,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 200 states have (on average 1.01) internal successors, (202), 201 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2021-11-09 10:44:28,170 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 195 [2021-11-09 10:44:28,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:28,171 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2021-11-09 10:44:28,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.4683544303797467) internal successors, (195), 80 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:28,171 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2021-11-09 10:44:28,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-09 10:44:28,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:28,172 INFO L513 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 1, 1, 1, 1] [2021-11-09 10:44:28,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:28,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-11-09 10:44:28,372 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:44:28,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:28,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1274780377, now seen corresponding path program 38 times [2021-11-09 10:44:28,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:28,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634113202] [2021-11-09 10:44:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:28,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3667 backedges. 0 proven. 3667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:30,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:30,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634113202] [2021-11-09 10:44:30,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634113202] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:30,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543214986] [2021-11-09 10:44:30,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:44:30,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:30,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:30,415 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:30,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-11-09 10:44:33,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:44:33,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:44:33,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-09 10:44:33,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3667 backedges. 0 proven. 3667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:33,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543214986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:33,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:44:33,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2021-11-09 10:44:33,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405152489] [2021-11-09 10:44:33,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-11-09 10:44:33,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:33,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-11-09 10:44:33,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2021-11-09 10:44:33,896 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand has 80 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 80 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:35,138 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2021-11-09 10:44:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-09 10:44:35,139 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 80 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2021-11-09 10:44:35,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:35,140 INFO L225 Difference]: With dead ends: 206 [2021-11-09 10:44:35,140 INFO L226 Difference]: Without dead ends: 205 [2021-11-09 10:44:35,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4018, Invalid=10024, Unknown=0, NotChecked=0, Total=14042 [2021-11-09 10:44:35,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-09 10:44:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-11-09 10:44:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2021-11-09 10:44:35,146 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 197 [2021-11-09 10:44:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:35,146 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2021-11-09 10:44:35,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 80 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2021-11-09 10:44:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-09 10:44:35,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:35,148 INFO L513 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 1, 1, 1, 1] [2021-11-09 10:44:35,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:35,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:35,348 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:44:35,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:35,349 INFO L85 PathProgramCache]: Analyzing trace with hash -881326607, now seen corresponding path program 39 times [2021-11-09 10:44:35,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:35,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123611042] [2021-11-09 10:44:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:35,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:37,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:37,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123611042] [2021-11-09 10:44:37,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123611042] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:37,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69775744] [2021-11-09 10:44:37,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:44:37,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:37,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:37,453 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:37,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-11-09 10:44:40,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-09 10:44:40,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:44:40,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-09 10:44:40,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:40,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69775744] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:40,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:44:40,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2021-11-09 10:44:40,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236353908] [2021-11-09 10:44:40,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-09 10:44:40,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:40,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-09 10:44:40,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2021-11-09 10:44:40,931 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand has 82 states, 81 states have (on average 2.4691358024691357) internal successors, (200), 82 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:42,137 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2021-11-09 10:44:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-09 10:44:42,137 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.4691358024691357) internal successors, (200), 82 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2021-11-09 10:44:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:42,138 INFO L225 Difference]: With dead ends: 209 [2021-11-09 10:44:42,138 INFO L226 Difference]: Without dead ends: 208 [2021-11-09 10:44:42,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4221, Invalid=10541, Unknown=0, NotChecked=0, Total=14762 [2021-11-09 10:44:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-09 10:44:42,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2021-11-09 10:44:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 1.0097560975609756) internal successors, (207), 206 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:42,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2021-11-09 10:44:42,146 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 200 [2021-11-09 10:44:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:42,147 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2021-11-09 10:44:42,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.4691358024691357) internal successors, (200), 82 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2021-11-09 10:44:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-09 10:44:42,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:42,149 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 1, 1, 1, 1] [2021-11-09 10:44:42,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:42,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:42,375 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:44:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash -846310413, now seen corresponding path program 39 times [2021-11-09 10:44:42,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:42,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669932952] [2021-11-09 10:44:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:42,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3861 backedges. 0 proven. 3861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:44,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:44,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669932952] [2021-11-09 10:44:44,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669932952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:44,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094737223] [2021-11-09 10:44:44,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:44:44,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:44,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:44,526 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:44,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-11-09 10:44:47,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-09 10:44:47,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:44:47,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-09 10:44:47,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3861 backedges. 0 proven. 3861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:48,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094737223] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:48,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:44:48,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2021-11-09 10:44:48,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2541713] [2021-11-09 10:44:48,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-09 10:44:48,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:48,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-09 10:44:48,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2021-11-09 10:44:48,149 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand has 82 states, 81 states have (on average 2.493827160493827) internal successors, (202), 82 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:49,441 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2021-11-09 10:44:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-09 10:44:49,441 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.493827160493827) internal successors, (202), 82 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2021-11-09 10:44:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:49,443 INFO L225 Difference]: With dead ends: 211 [2021-11-09 10:44:49,443 INFO L226 Difference]: Without dead ends: 210 [2021-11-09 10:44:49,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4221, Invalid=10541, Unknown=0, NotChecked=0, Total=14762 [2021-11-09 10:44:49,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-09 10:44:49,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2021-11-09 10:44:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 208 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2021-11-09 10:44:49,451 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 202 [2021-11-09 10:44:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:49,451 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2021-11-09 10:44:49,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.493827160493827) internal successors, (202), 82 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2021-11-09 10:44:49,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-09 10:44:49,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:49,454 INFO L513 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 1, 1, 1, 1] [2021-11-09 10:44:49,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:49,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:49,679 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:44:49,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:49,679 INFO L85 PathProgramCache]: Analyzing trace with hash -975432795, now seen corresponding path program 40 times [2021-11-09 10:44:49,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:49,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889521587] [2021-11-09 10:44:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:49,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:51,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:51,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889521587] [2021-11-09 10:44:51,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889521587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:51,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941830810] [2021-11-09 10:44:51,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:44:51,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:51,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:51,887 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:51,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-11-09 10:44:55,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:44:55,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:44:55,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-09 10:44:55,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:55,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941830810] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:55,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:44:55,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2021-11-09 10:44:55,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780338692] [2021-11-09 10:44:55,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-11-09 10:44:55,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:55,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-11-09 10:44:55,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2021-11-09 10:44:55,608 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand has 84 states, 83 states have (on average 2.4698795180722892) internal successors, (205), 84 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:56,890 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2021-11-09 10:44:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-09 10:44:56,891 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.4698795180722892) internal successors, (205), 84 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2021-11-09 10:44:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:56,892 INFO L225 Difference]: With dead ends: 214 [2021-11-09 10:44:56,892 INFO L226 Difference]: Without dead ends: 213 [2021-11-09 10:44:56,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4429, Invalid=11071, Unknown=0, NotChecked=0, Total=15500 [2021-11-09 10:44:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-09 10:44:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2021-11-09 10:44:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 1.0095238095238095) internal successors, (212), 211 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) [2021-11-09 10:44:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2021-11-09 10:44:56,896 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 205 [2021-11-09 10:44:56,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:56,896 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2021-11-09 10:44:56,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.4698795180722892) internal successors, (205), 84 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:56,897 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2021-11-09 10:44:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-09 10:44:56,897 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:56,898 INFO L513 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 1, 1, 1, 1] [2021-11-09 10:44:56,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-11-09 10:44:57,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:57,115 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:44:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:57,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1088043865, now seen corresponding path program 40 times [2021-11-09 10:44:57,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:57,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282200636] [2021-11-09 10:44:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:57,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4060 backedges. 0 proven. 4060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:58,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:58,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282200636] [2021-11-09 10:44:58,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282200636] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:58,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420145380] [2021-11-09 10:44:58,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:44:58,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:58,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:58,999 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:59,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-11-09 10:45:02,209 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:45:02,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:45:02,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-09 10:45:02,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4060 backedges. 0 proven. 4060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:02,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420145380] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:02,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:45:02,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2021-11-09 10:45:02,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205980588] [2021-11-09 10:45:02,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-11-09 10:45:02,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:02,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-11-09 10:45:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2021-11-09 10:45:02,892 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand has 84 states, 83 states have (on average 2.4939759036144578) internal successors, (207), 84 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:04,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:04,637 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2021-11-09 10:45:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-09 10:45:04,638 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.4939759036144578) internal successors, (207), 84 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2021-11-09 10:45:04,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:04,639 INFO L225 Difference]: With dead ends: 216 [2021-11-09 10:45:04,639 INFO L226 Difference]: Without dead ends: 215 [2021-11-09 10:45:04,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4429, Invalid=11071, Unknown=0, NotChecked=0, Total=15500 [2021-11-09 10:45:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-09 10:45:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-11-09 10:45:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 212 states have (on average 1.009433962264151) internal successors, (214), 213 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2021-11-09 10:45:04,645 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 207 [2021-11-09 10:45:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:04,645 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2021-11-09 10:45:04,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.4939759036144578) internal successors, (207), 84 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2021-11-09 10:45:04,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-09 10:45:04,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:04,646 INFO L513 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 1, 1, 1, 1] [2021-11-09 10:45:04,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-11-09 10:45:04,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:04,847 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:45:04,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:04,848 INFO L85 PathProgramCache]: Analyzing trace with hash 203454065, now seen corresponding path program 41 times [2021-11-09 10:45:04,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:04,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542972370] [2021-11-09 10:45:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:04,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:07,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:07,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542972370] [2021-11-09 10:45:07,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542972370] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:07,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087174416] [2021-11-09 10:45:07,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:45:07,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:07,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:07,075 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:07,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-11-09 10:45:10,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-09 10:45:10,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:45:10,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-09 10:45:10,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:11,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087174416] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:11,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:45:11,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2021-11-09 10:45:11,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606599839] [2021-11-09 10:45:11,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-09 10:45:11,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:11,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-09 10:45:11,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2021-11-09 10:45:11,224 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand has 86 states, 85 states have (on average 2.4705882352941178) internal successors, (210), 86 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:12,622 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2021-11-09 10:45:12,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-09 10:45:12,623 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.4705882352941178) internal successors, (210), 86 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2021-11-09 10:45:12,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:12,624 INFO L225 Difference]: With dead ends: 219 [2021-11-09 10:45:12,624 INFO L226 Difference]: Without dead ends: 218 [2021-11-09 10:45:12,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4642, Invalid=11614, Unknown=0, NotChecked=0, Total=16256 [2021-11-09 10:45:12,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-09 10:45:12,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2021-11-09 10:45:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 215 states have (on average 1.0093023255813953) internal successors, (217), 216 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2021-11-09 10:45:12,630 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 210 [2021-11-09 10:45:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:12,631 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2021-11-09 10:45:12,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 2.4705882352941178) internal successors, (210), 86 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2021-11-09 10:45:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-09 10:45:12,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:12,633 INFO L513 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 1, 1, 1, 1] [2021-11-09 10:45:12,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-11-09 10:45:12,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-11-09 10:45:12,835 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:45:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2049137549, now seen corresponding path program 41 times [2021-11-09 10:45:12,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:12,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671483629] [2021-11-09 10:45:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:12,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 4264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:15,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:15,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671483629] [2021-11-09 10:45:15,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671483629] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:15,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115880662] [2021-11-09 10:45:15,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:45:15,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:15,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:15,031 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:15,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-11-09 10:45:18,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-09 10:45:18,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:45:18,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 85 conjunts are in the unsatisfiable core [2021-11-09 10:45:18,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 4264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:19,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115880662] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:19,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:45:19,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2021-11-09 10:45:19,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697839684] [2021-11-09 10:45:19,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-09 10:45:19,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-09 10:45:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2021-11-09 10:45:19,222 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand has 86 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 86 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) [2021-11-09 10:45:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:20,657 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2021-11-09 10:45:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-09 10:45:20,658 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 86 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 212 [2021-11-09 10:45:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:20,659 INFO L225 Difference]: With dead ends: 221 [2021-11-09 10:45:20,659 INFO L226 Difference]: Without dead ends: 220 [2021-11-09 10:45:20,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4642, Invalid=11614, Unknown=0, NotChecked=0, Total=16256 [2021-11-09 10:45:20,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-09 10:45:20,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2021-11-09 10:45:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.0092165898617511) internal successors, (219), 218 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2021-11-09 10:45:20,666 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 212 [2021-11-09 10:45:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:20,667 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2021-11-09 10:45:20,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 86 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) [2021-11-09 10:45:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2021-11-09 10:45:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-09 10:45:20,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:20,669 INFO L513 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 1, 1, 1, 1] [2021-11-09 10:45:20,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:20,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:20,887 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:45:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:20,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1486490843, now seen corresponding path program 42 times [2021-11-09 10:45:20,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:20,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497380419] [2021-11-09 10:45:20,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:20,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:23,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:23,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497380419] [2021-11-09 10:45:23,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497380419] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:23,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148328456] [2021-11-09 10:45:23,099 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:45:23,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:23,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:23,101 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:23,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-11-09 10:45:26,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-09 10:45:26,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:45:26,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-09 10:45:26,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:27,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148328456] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:27,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:45:27,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2021-11-09 10:45:27,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659454082] [2021-11-09 10:45:27,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-09 10:45:27,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:27,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-09 10:45:27,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2021-11-09 10:45:27,231 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand has 88 states, 87 states have (on average 2.471264367816092) internal successors, (215), 88 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:28,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:28,651 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2021-11-09 10:45:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-09 10:45:28,652 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.471264367816092) internal successors, (215), 88 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2021-11-09 10:45:28,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:28,653 INFO L225 Difference]: With dead ends: 224 [2021-11-09 10:45:28,653 INFO L226 Difference]: Without dead ends: 223 [2021-11-09 10:45:28,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4860, Invalid=12170, Unknown=0, NotChecked=0, Total=17030 [2021-11-09 10:45:28,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-09 10:45:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-11-09 10:45:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2021-11-09 10:45:28,658 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 215 [2021-11-09 10:45:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:28,658 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2021-11-09 10:45:28,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.471264367816092) internal successors, (215), 88 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2021-11-09 10:45:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-09 10:45:28,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:28,660 INFO L513 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 1, 1, 1, 1] [2021-11-09 10:45:28,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-11-09 10:45:28,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:28,861 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:45:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1706411047, now seen corresponding path program 42 times [2021-11-09 10:45:28,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:28,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565700732] [2021-11-09 10:45:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:28,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4473 backedges. 0 proven. 4473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:31,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:31,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565700732] [2021-11-09 10:45:31,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565700732] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:31,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833282560] [2021-11-09 10:45:31,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:45:31,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:31,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:31,227 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:31,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-11-09 10:45:34,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-09 10:45:34,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:45:34,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 87 conjunts are in the unsatisfiable core [2021-11-09 10:45:34,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4473 backedges. 0 proven. 4473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:35,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833282560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:35,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:45:35,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2021-11-09 10:45:35,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321553558] [2021-11-09 10:45:35,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-09 10:45:35,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:35,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-09 10:45:35,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2021-11-09 10:45:35,594 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand has 88 states, 87 states have (on average 2.4942528735632186) internal successors, (217), 88 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:37,166 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2021-11-09 10:45:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-09 10:45:37,167 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.4942528735632186) internal successors, (217), 88 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2021-11-09 10:45:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:37,168 INFO L225 Difference]: With dead ends: 226 [2021-11-09 10:45:37,168 INFO L226 Difference]: Without dead ends: 225 [2021-11-09 10:45:37,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4860, Invalid=12170, Unknown=0, NotChecked=0, Total=17030 [2021-11-09 10:45:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-09 10:45:37,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224. [2021-11-09 10:45:37,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 1.009009009009009) internal successors, (224), 223 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2021-11-09 10:45:37,175 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 217 [2021-11-09 10:45:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:37,175 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2021-11-09 10:45:37,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.4942528735632186) internal successors, (217), 88 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2021-11-09 10:45:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-09 10:45:37,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:37,177 INFO L513 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 1, 1, 1, 1] [2021-11-09 10:45:37,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-11-09 10:45:37,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-11-09 10:45:37,378 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:45:37,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:37,378 INFO L85 PathProgramCache]: Analyzing trace with hash 458639089, now seen corresponding path program 43 times [2021-11-09 10:45:37,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:37,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065105813] [2021-11-09 10:45:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:37,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:39,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:39,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065105813] [2021-11-09 10:45:39,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065105813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:39,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802748859] [2021-11-09 10:45:39,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:45:39,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:39,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:39,724 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:39,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-11-09 10:45:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:43,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-09 10:45:43,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:43,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802748859] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:43,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:45:43,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2021-11-09 10:45:43,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236021054] [2021-11-09 10:45:43,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-11-09 10:45:43,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:43,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-11-09 10:45:43,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2021-11-09 10:45:43,815 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand has 90 states, 89 states have (on average 2.4719101123595504) internal successors, (220), 90 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:45,429 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2021-11-09 10:45:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-09 10:45:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 2.4719101123595504) internal successors, (220), 90 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2021-11-09 10:45:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:45,430 INFO L225 Difference]: With dead ends: 229 [2021-11-09 10:45:45,431 INFO L226 Difference]: Without dead ends: 228 [2021-11-09 10:45:45,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5083, Invalid=12739, Unknown=0, NotChecked=0, Total=17822 [2021-11-09 10:45:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-09 10:45:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2021-11-09 10:45:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 225 states have (on average 1.008888888888889) internal successors, (227), 226 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2021-11-09 10:45:45,436 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 220 [2021-11-09 10:45:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:45,436 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2021-11-09 10:45:45,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 2.4719101123595504) internal successors, (220), 90 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2021-11-09 10:45:45,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-09 10:45:45,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:45,437 INFO L513 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 1, 1, 1, 1] [2021-11-09 10:45:45,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:45,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-11-09 10:45:45,638 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:45:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1629465357, now seen corresponding path program 43 times [2021-11-09 10:45:45,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:45,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270570884] [2021-11-09 10:45:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:45,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4687 backedges. 0 proven. 4687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:48,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:48,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270570884] [2021-11-09 10:45:48,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270570884] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:48,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456675164] [2021-11-09 10:45:48,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:45:48,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:48,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:48,054 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:48,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-11-09 10:45:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:51,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-09 10:45:51,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4687 backedges. 0 proven. 4687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:52,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456675164] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:52,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:45:52,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2021-11-09 10:45:52,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608395104] [2021-11-09 10:45:52,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-11-09 10:45:52,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:52,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-11-09 10:45:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2021-11-09 10:45:52,239 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand has 90 states, 89 states have (on average 2.49438202247191) internal successors, (222), 90 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:53,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:53,820 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2021-11-09 10:45:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-09 10:45:53,821 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 2.49438202247191) internal successors, (222), 90 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2021-11-09 10:45:53,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:53,823 INFO L225 Difference]: With dead ends: 231 [2021-11-09 10:45:53,823 INFO L226 Difference]: Without dead ends: 230 [2021-11-09 10:45:53,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5083, Invalid=12739, Unknown=0, NotChecked=0, Total=17822 [2021-11-09 10:45:53,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-09 10:45:53,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2021-11-09 10:45:53,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 228 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:53,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2021-11-09 10:45:53,833 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 222 [2021-11-09 10:45:53,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:53,834 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2021-11-09 10:45:53,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 2.49438202247191) internal successors, (222), 90 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:53,835 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2021-11-09 10:45:53,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-09 10:45:53,836 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:53,836 INFO L513 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 1, 1, 1, 1] [2021-11-09 10:45:53,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:54,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-11-09 10:45:54,063 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:45:54,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:54,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1682017627, now seen corresponding path program 44 times [2021-11-09 10:45:54,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:54,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619575236] [2021-11-09 10:45:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:54,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:56,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:56,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619575236] [2021-11-09 10:45:56,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619575236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:56,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645800748] [2021-11-09 10:45:56,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:45:56,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:56,739 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:56,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-11-09 10:46:00,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:46:00,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:00,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-09 10:46:00,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:00,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645800748] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:00,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:00,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2021-11-09 10:46:00,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299381012] [2021-11-09 10:46:00,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-09 10:46:00,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:00,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-09 10:46:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2021-11-09 10:46:00,916 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand has 92 states, 91 states have (on average 2.4725274725274726) internal successors, (225), 92 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:02,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:02,498 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2021-11-09 10:46:02,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-09 10:46:02,499 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.4725274725274726) internal successors, (225), 92 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2021-11-09 10:46:02,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:02,500 INFO L225 Difference]: With dead ends: 234 [2021-11-09 10:46:02,500 INFO L226 Difference]: Without dead ends: 233 [2021-11-09 10:46:02,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5311, Invalid=13321, Unknown=0, NotChecked=0, Total=18632 [2021-11-09 10:46:02,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-09 10:46:02,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2021-11-09 10:46:02,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 230 states have (on average 1.008695652173913) internal successors, (232), 231 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:02,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2021-11-09 10:46:02,509 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 225 [2021-11-09 10:46:02,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:02,510 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2021-11-09 10:46:02,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 2.4725274725274726) internal successors, (225), 92 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2021-11-09 10:46:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-09 10:46:02,512 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:02,512 INFO L513 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 1, 1, 1, 1] [2021-11-09 10:46:02,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:02,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:02,727 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:46:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1511234649, now seen corresponding path program 44 times [2021-11-09 10:46:02,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:02,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663810298] [2021-11-09 10:46:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:02,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 4906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:05,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:05,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663810298] [2021-11-09 10:46:05,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663810298] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:05,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29286306] [2021-11-09 10:46:05,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:46:05,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:05,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:05,333 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:05,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-11-09 10:46:08,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:46:08,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:08,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-09 10:46:08,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 4906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:09,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29286306] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:09,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:09,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2021-11-09 10:46:09,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272930417] [2021-11-09 10:46:09,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-09 10:46:09,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-09 10:46:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2021-11-09 10:46:09,455 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand has 92 states, 91 states have (on average 2.4945054945054945) internal successors, (227), 92 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:11,034 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2021-11-09 10:46:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-09 10:46:11,035 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.4945054945054945) internal successors, (227), 92 states have internal predecessors, (227), 0 states have call successors, (0), 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 227 [2021-11-09 10:46:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:11,036 INFO L225 Difference]: With dead ends: 236 [2021-11-09 10:46:11,036 INFO L226 Difference]: Without dead ends: 235 [2021-11-09 10:46:11,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5311, Invalid=13321, Unknown=0, NotChecked=0, Total=18632 [2021-11-09 10:46:11,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-09 10:46:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2021-11-09 10:46:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2021-11-09 10:46:11,042 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 227 [2021-11-09 10:46:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:11,042 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2021-11-09 10:46:11,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 2.4945054945054945) internal successors, (227), 92 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2021-11-09 10:46:11,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-09 10:46:11,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:11,043 INFO L513 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 1, 1, 1, 1] [2021-11-09 10:46:11,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:11,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:11,244 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:46:11,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:11,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1344178319, now seen corresponding path program 45 times [2021-11-09 10:46:11,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:11,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542088865] [2021-11-09 10:46:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:11,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:13,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:13,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542088865] [2021-11-09 10:46:13,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542088865] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:13,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973715433] [2021-11-09 10:46:13,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:46:13,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:13,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:13,938 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:13,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-11-09 10:46:18,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-09 10:46:18,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:18,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-09 10:46:18,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:18,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973715433] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:18,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:18,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2021-11-09 10:46:18,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979275972] [2021-11-09 10:46:18,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-09 10:46:18,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:18,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-09 10:46:18,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-09 10:46:18,749 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand has 94 states, 93 states have (on average 2.4731182795698925) internal successors, (230), 94 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:20,354 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2021-11-09 10:46:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-11-09 10:46:20,355 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4731182795698925) internal successors, (230), 94 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2021-11-09 10:46:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:20,356 INFO L225 Difference]: With dead ends: 239 [2021-11-09 10:46:20,356 INFO L226 Difference]: Without dead ends: 238 [2021-11-09 10:46:20,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5544, Invalid=13916, Unknown=0, NotChecked=0, Total=19460 [2021-11-09 10:46:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-09 10:46:20,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2021-11-09 10:46:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 235 states have (on average 1.0085106382978724) internal successors, (237), 236 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2021-11-09 10:46:20,362 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 230 [2021-11-09 10:46:20,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:20,362 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2021-11-09 10:46:20,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4731182795698925) internal successors, (230), 94 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:20,362 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2021-11-09 10:46:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-09 10:46:20,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:20,363 INFO L513 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 1, 1, 1, 1] [2021-11-09 10:46:20,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:20,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:20,567 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:46:20,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:20,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1029793139, now seen corresponding path program 45 times [2021-11-09 10:46:20,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:20,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290054557] [2021-11-09 10:46:20,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:20,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:23,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:23,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290054557] [2021-11-09 10:46:23,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290054557] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:23,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563705708] [2021-11-09 10:46:23,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:46:23,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:23,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:23,208 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:23,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-11-09 10:46:27,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-09 10:46:27,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:27,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-09 10:46:27,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:27,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563705708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:27,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:27,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2021-11-09 10:46:27,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395921794] [2021-11-09 10:46:27,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-09 10:46:27,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:27,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-09 10:46:27,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-09 10:46:27,858 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:29,558 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2021-11-09 10:46:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-11-09 10:46:29,558 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2021-11-09 10:46:29,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:29,560 INFO L225 Difference]: With dead ends: 241 [2021-11-09 10:46:29,560 INFO L226 Difference]: Without dead ends: 240 [2021-11-09 10:46:29,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5544, Invalid=13916, Unknown=0, NotChecked=0, Total=19460 [2021-11-09 10:46:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-09 10:46:29,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2021-11-09 10:46:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2021-11-09 10:46:29,565 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 232 [2021-11-09 10:46:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:29,565 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2021-11-09 10:46:29,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:29,566 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2021-11-09 10:46:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-09 10:46:29,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:29,567 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-11-09 10:46:29,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:29,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2021-11-09 10:46:29,767 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:46:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 46 times [2021-11-09 10:46:29,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:29,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274295805] [2021-11-09 10:46:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:29,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:32,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:32,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274295805] [2021-11-09 10:46:32,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274295805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:32,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363784728] [2021-11-09 10:46:32,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:46:32,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:32,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:32,570 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:32,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-11-09 10:46:36,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:46:36,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:36,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-09 10:46:36,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:37,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363784728] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:37,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:37,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2021-11-09 10:46:37,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680184644] [2021-11-09 10:46:37,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-09 10:46:37,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:37,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-09 10:46:37,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2021-11-09 10:46:37,430 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 96 states, 95 states have (on average 2.473684210526316) internal successors, (235), 96 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:39,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:39,113 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2021-11-09 10:46:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-09 10:46:39,113 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.473684210526316) internal successors, (235), 96 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-09 10:46:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:39,114 INFO L225 Difference]: With dead ends: 244 [2021-11-09 10:46:39,115 INFO L226 Difference]: Without dead ends: 243 [2021-11-09 10:46:39,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5782, Invalid=14524, Unknown=0, NotChecked=0, Total=20306 [2021-11-09 10:46:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-09 10:46:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242. [2021-11-09 10:46:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 241 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2021-11-09 10:46:39,126 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 235 [2021-11-09 10:46:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:39,126 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2021-11-09 10:46:39,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.473684210526316) internal successors, (235), 96 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2021-11-09 10:46:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-09 10:46:39,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:39,129 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-11-09 10:46:39,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:39,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:39,343 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:46:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash 402760487, now seen corresponding path program 46 times [2021-11-09 10:46:39,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:39,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16221757] [2021-11-09 10:46:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:39,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:41,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:41,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16221757] [2021-11-09 10:46:41,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16221757] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:41,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109887755] [2021-11-09 10:46:41,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:46:41,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:41,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:41,909 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:41,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-11-09 10:46:46,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:46:46,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:46,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-09 10:46:46,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:46,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109887755] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:46,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:46,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2021-11-09 10:46:46,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655613930] [2021-11-09 10:46:46,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-09 10:46:46,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-09 10:46:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2021-11-09 10:46:46,701 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:48,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:48,349 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2021-11-09 10:46:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-09 10:46:48,350 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2021-11-09 10:46:48,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:48,351 INFO L225 Difference]: With dead ends: 246 [2021-11-09 10:46:48,351 INFO L226 Difference]: Without dead ends: 245 [2021-11-09 10:46:48,353 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5782, Invalid=14524, Unknown=0, NotChecked=0, Total=20306 [2021-11-09 10:46:48,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-09 10:46:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2021-11-09 10:46:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 242 states have (on average 1.0082644628099173) internal successors, (244), 243 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2021-11-09 10:46:48,358 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 237 [2021-11-09 10:46:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:48,358 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2021-11-09 10:46:48,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:48,359 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2021-11-09 10:46:48,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-09 10:46:48,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:48,360 INFO L513 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 1, 1, 1, 1] [2021-11-09 10:46:48,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-11-09 10:46:48,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:48,563 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:46:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1500903439, now seen corresponding path program 47 times [2021-11-09 10:46:48,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:48,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419380940] [2021-11-09 10:46:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:48,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:51,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:51,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419380940] [2021-11-09 10:46:51,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419380940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:51,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106914962] [2021-11-09 10:46:51,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:46:51,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:51,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:51,376 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:51,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-11-09 10:46:55,758 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-09 10:46:55,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:55,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-09 10:46:55,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:56,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106914962] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:56,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:56,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2021-11-09 10:46:56,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271303720] [2021-11-09 10:46:56,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-09 10:46:56,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:56,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-09 10:46:56,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2021-11-09 10:46:56,435 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand has 98 states, 97 states have (on average 2.4742268041237114) internal successors, (240), 98 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:58,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:58,243 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2021-11-09 10:46:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-09 10:46:58,244 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 2.4742268041237114) internal successors, (240), 98 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2021-11-09 10:46:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:58,245 INFO L225 Difference]: With dead ends: 249 [2021-11-09 10:46:58,245 INFO L226 Difference]: Without dead ends: 248 [2021-11-09 10:46:58,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3337 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6025, Invalid=15145, Unknown=0, NotChecked=0, Total=21170 [2021-11-09 10:46:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-09 10:46:58,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2021-11-09 10:46:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 245 states have (on average 1.0081632653061225) internal successors, (247), 246 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2021-11-09 10:46:58,252 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 240 [2021-11-09 10:46:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:58,252 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2021-11-09 10:46:58,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 2.4742268041237114) internal successors, (240), 98 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2021-11-09 10:46:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-09 10:46:58,253 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:58,254 INFO L513 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 1, 1, 1, 1] [2021-11-09 10:46:58,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:58,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-11-09 10:46:58,454 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:46:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:58,455 INFO L85 PathProgramCache]: Analyzing trace with hash 740808179, now seen corresponding path program 47 times [2021-11-09 10:46:58,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:58,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617318406] [2021-11-09 10:46:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:58,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5593 backedges. 0 proven. 5593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:01,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:01,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617318406] [2021-11-09 10:47:01,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617318406] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:01,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929708013] [2021-11-09 10:47:01,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:47:01,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:01,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:01,292 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:01,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-11-09 10:47:05,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-09 10:47:05,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:47:05,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-09 10:47:05,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5593 backedges. 0 proven. 5593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:06,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929708013] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:06,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:47:06,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2021-11-09 10:47:06,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839463651] [2021-11-09 10:47:06,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-09 10:47:06,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-09 10:47:06,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2021-11-09 10:47:06,511 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand has 98 states, 97 states have (on average 2.4948453608247423) internal successors, (242), 98 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:47:08,089 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2021-11-09 10:47:08,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-09 10:47:08,089 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 2.4948453608247423) internal successors, (242), 98 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2021-11-09 10:47:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:47:08,090 INFO L225 Difference]: With dead ends: 251 [2021-11-09 10:47:08,091 INFO L226 Difference]: Without dead ends: 250 [2021-11-09 10:47:08,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3337 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6025, Invalid=15145, Unknown=0, NotChecked=0, Total=21170 [2021-11-09 10:47:08,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-09 10:47:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-11-09 10:47:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.008097165991903) internal successors, (249), 248 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2021-11-09 10:47:08,097 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 242 [2021-11-09 10:47:08,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:47:08,097 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2021-11-09 10:47:08,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 2.4948453608247423) internal successors, (242), 98 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2021-11-09 10:47:08,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-09 10:47:08,098 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:47:08,098 INFO L513 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 1, 1, 1, 1] [2021-11-09 10:47:08,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-11-09 10:47:08,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:08,299 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:47:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1874547109, now seen corresponding path program 48 times [2021-11-09 10:47:08,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:08,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675708130] [2021-11-09 10:47:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:08,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:11,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:11,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675708130] [2021-11-09 10:47:11,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675708130] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:11,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393765281] [2021-11-09 10:47:11,399 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:47:11,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:11,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:11,400 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:11,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-11-09 10:47:15,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-09 10:47:15,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:47:15,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 100 conjunts are in the unsatisfiable core [2021-11-09 10:47:15,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:16,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393765281] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:16,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:47:16,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2021-11-09 10:47:16,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876167070] [2021-11-09 10:47:16,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-09 10:47:16,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:16,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-09 10:47:16,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2021-11-09 10:47:16,704 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand has 100 states, 99 states have (on average 2.474747474747475) internal successors, (245), 100 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:18,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:47:18,576 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2021-11-09 10:47:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-09 10:47:18,577 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.474747474747475) internal successors, (245), 100 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2021-11-09 10:47:18,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:47:18,578 INFO L225 Difference]: With dead ends: 254 [2021-11-09 10:47:18,578 INFO L226 Difference]: Without dead ends: 253 [2021-11-09 10:47:18,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6273, Invalid=15779, Unknown=0, NotChecked=0, Total=22052 [2021-11-09 10:47:18,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-09 10:47:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2021-11-09 10:47:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2021-11-09 10:47:18,585 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 245 [2021-11-09 10:47:18,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:47:18,586 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2021-11-09 10:47:18,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.474747474747475) internal successors, (245), 100 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:18,586 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2021-11-09 10:47:18,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-09 10:47:18,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:47:18,588 INFO L513 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 1, 1, 1, 1] [2021-11-09 10:47:18,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-11-09 10:47:18,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-11-09 10:47:18,811 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:47:18,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1848476327, now seen corresponding path program 48 times [2021-11-09 10:47:18,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:18,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044395864] [2021-11-09 10:47:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:18,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:21,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:21,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044395864] [2021-11-09 10:47:21,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044395864] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:21,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202933573] [2021-11-09 10:47:21,857 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:47:21,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:21,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:21,858 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:21,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-11-09 10:47:26,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-09 10:47:26,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:47:26,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-09 10:47:26,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:27,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202933573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:27,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:47:27,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2021-11-09 10:47:27,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284326230] [2021-11-09 10:47:27,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-09 10:47:27,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-09 10:47:27,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2021-11-09 10:47:27,460 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand has 100 states, 99 states have (on average 2.494949494949495) internal successors, (247), 100 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:47:29,343 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2021-11-09 10:47:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-09 10:47:29,344 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.494949494949495) internal successors, (247), 100 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2021-11-09 10:47:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:47:29,345 INFO L225 Difference]: With dead ends: 256 [2021-11-09 10:47:29,345 INFO L226 Difference]: Without dead ends: 255 [2021-11-09 10:47:29,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6273, Invalid=15779, Unknown=0, NotChecked=0, Total=22052 [2021-11-09 10:47:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-09 10:47:29,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-11-09 10:47:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 1.007936507936508) internal successors, (254), 253 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:29,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2021-11-09 10:47:29,352 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 247 [2021-11-09 10:47:29,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:47:29,352 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2021-11-09 10:47:29,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.494949494949495) internal successors, (247), 100 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2021-11-09 10:47:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-09 10:47:29,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:47:29,354 INFO L513 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 1, 1, 1, 1] [2021-11-09 10:47:29,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-11-09 10:47:29,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:29,554 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:47:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2112358287, now seen corresponding path program 49 times [2021-11-09 10:47:29,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:29,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000509223] [2021-11-09 10:47:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:29,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:32,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:32,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000509223] [2021-11-09 10:47:32,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000509223] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:32,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550497105] [2021-11-09 10:47:32,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:47:32,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:32,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:32,713 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:32,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-11-09 10:47:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:36,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-09 10:47:36,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:37,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550497105] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:37,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:47:37,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2021-11-09 10:47:37,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336373510] [2021-11-09 10:47:37,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-09 10:47:37,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:37,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-09 10:47:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2021-11-09 10:47:37,529 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand has 102 states, 101 states have (on average 2.4752475247524752) internal successors, (250), 102 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:47:39,259 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2021-11-09 10:47:39,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-09 10:47:39,260 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 2.4752475247524752) internal successors, (250), 102 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2021-11-09 10:47:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:47:39,261 INFO L225 Difference]: With dead ends: 259 [2021-11-09 10:47:39,261 INFO L226 Difference]: Without dead ends: 258 [2021-11-09 10:47:39,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6526, Invalid=16426, Unknown=0, NotChecked=0, Total=22952 [2021-11-09 10:47:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-09 10:47:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2021-11-09 10:47:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2021-11-09 10:47:39,269 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 250 [2021-11-09 10:47:39,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:47:39,270 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2021-11-09 10:47:39,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 2.4752475247524752) internal successors, (250), 102 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:39,270 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2021-11-09 10:47:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-09 10:47:39,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:47:39,272 INFO L513 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 1, 1, 1, 1] [2021-11-09 10:47:39,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-11-09 10:47:39,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:39,499 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:47:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1543218803, now seen corresponding path program 49 times [2021-11-09 10:47:39,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:39,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15861401] [2021-11-09 10:47:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:39,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6076 backedges. 0 proven. 6076 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:42,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:42,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15861401] [2021-11-09 10:47:42,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15861401] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:42,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418484587] [2021-11-09 10:47:42,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:47:42,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:42,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:42,252 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:42,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-11-09 10:47:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:46,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-09 10:47:46,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6076 backedges. 0 proven. 6076 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:46,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418484587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:46,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:47:46,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2021-11-09 10:47:46,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630624641] [2021-11-09 10:47:46,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-09 10:47:46,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:46,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-09 10:47:46,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2021-11-09 10:47:46,938 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand has 102 states, 101 states have (on average 2.495049504950495) internal successors, (252), 102 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:47:48,634 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2021-11-09 10:47:48,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-09 10:47:48,634 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 2.495049504950495) internal successors, (252), 102 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2021-11-09 10:47:48,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:47:48,635 INFO L225 Difference]: With dead ends: 261 [2021-11-09 10:47:48,635 INFO L226 Difference]: Without dead ends: 260 [2021-11-09 10:47:48,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6526, Invalid=16426, Unknown=0, NotChecked=0, Total=22952 [2021-11-09 10:47:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-09 10:47:48,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2021-11-09 10:47:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 258 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:48,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2021-11-09 10:47:48,640 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 252 [2021-11-09 10:47:48,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:47:48,640 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2021-11-09 10:47:48,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 2.495049504950495) internal successors, (252), 102 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:48,641 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2021-11-09 10:47:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-09 10:47:48,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:47:48,642 INFO L513 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 1, 1, 1, 1] [2021-11-09 10:47:48,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-11-09 10:47:48,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-11-09 10:47:48,847 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:47:48,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:48,847 INFO L85 PathProgramCache]: Analyzing trace with hash 701477157, now seen corresponding path program 50 times [2021-11-09 10:47:48,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:48,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543100024] [2021-11-09 10:47:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:48,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:51,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:51,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543100024] [2021-11-09 10:47:51,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543100024] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:51,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900015168] [2021-11-09 10:47:51,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:47:51,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:51,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:51,651 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:51,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-11-09 10:47:55,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:47:55,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:47:55,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-09 10:47:55,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:47:56,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900015168] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:56,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:47:56,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2021-11-09 10:47:56,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919289526] [2021-11-09 10:47:56,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-09 10:47:56,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-09 10:47:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2021-11-09 10:47:56,576 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand has 104 states, 103 states have (on average 2.4757281553398056) internal successors, (255), 104 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:47:58,296 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2021-11-09 10:47:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-09 10:47:58,296 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.4757281553398056) internal successors, (255), 104 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2021-11-09 10:47:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:47:58,297 INFO L225 Difference]: With dead ends: 264 [2021-11-09 10:47:58,297 INFO L226 Difference]: Without dead ends: 263 [2021-11-09 10:47:58,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6784, Invalid=17086, Unknown=0, NotChecked=0, Total=23870 [2021-11-09 10:47:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-09 10:47:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-11-09 10:47:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 260 states have (on average 1.0076923076923077) internal successors, (262), 261 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2021-11-09 10:47:58,306 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 255 [2021-11-09 10:47:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:47:58,307 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2021-11-09 10:47:58,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.4757281553398056) internal successors, (255), 104 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:58,307 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2021-11-09 10:47:58,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-09 10:47:58,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:47:58,309 INFO L513 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 1, 1, 1, 1] [2021-11-09 10:47:58,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-11-09 10:47:58,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-11-09 10:47:58,535 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:47:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:58,535 INFO L85 PathProgramCache]: Analyzing trace with hash -190315993, now seen corresponding path program 50 times [2021-11-09 10:47:58,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:58,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253291497] [2021-11-09 10:47:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:58,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6325 backedges. 0 proven. 6325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:01,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:01,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253291497] [2021-11-09 10:48:01,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253291497] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:01,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746686126] [2021-11-09 10:48:01,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:48:01,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:01,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:01,430 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:01,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-11-09 10:48:05,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:48:05,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:05,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 103 conjunts are in the unsatisfiable core [2021-11-09 10:48:05,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6325 backedges. 0 proven. 6325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:06,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746686126] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:06,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:06,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2021-11-09 10:48:06,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279967293] [2021-11-09 10:48:06,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-09 10:48:06,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-09 10:48:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2021-11-09 10:48:06,568 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand has 104 states, 103 states have (on average 2.495145631067961) internal successors, (257), 104 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:08,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:08,676 INFO L93 Difference]: Finished difference Result 266 states and 266 transitions. [2021-11-09 10:48:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-09 10:48:08,676 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.495145631067961) internal successors, (257), 104 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2021-11-09 10:48:08,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:08,677 INFO L225 Difference]: With dead ends: 266 [2021-11-09 10:48:08,677 INFO L226 Difference]: Without dead ends: 265 [2021-11-09 10:48:08,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6784, Invalid=17086, Unknown=0, NotChecked=0, Total=23870 [2021-11-09 10:48:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-09 10:48:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264. [2021-11-09 10:48:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2021-11-09 10:48:08,683 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 257 [2021-11-09 10:48:08,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:08,683 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2021-11-09 10:48:08,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.495145631067961) internal successors, (257), 104 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2021-11-09 10:48:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-09 10:48:08,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:08,685 INFO L513 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 1, 1, 1, 1] [2021-11-09 10:48:08,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-11-09 10:48:08,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-11-09 10:48:08,885 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:48:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:08,886 INFO L85 PathProgramCache]: Analyzing trace with hash -346863375, now seen corresponding path program 51 times [2021-11-09 10:48:08,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:08,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519669905] [2021-11-09 10:48:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:08,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:12,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:12,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519669905] [2021-11-09 10:48:12,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519669905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:12,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348063830] [2021-11-09 10:48:12,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:48:12,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:12,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:12,330 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:12,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-11-09 10:48:17,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-09 10:48:17,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:17,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-09 10:48:17,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:18,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348063830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:18,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:18,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2021-11-09 10:48:18,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312208034] [2021-11-09 10:48:18,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-11-09 10:48:18,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-11-09 10:48:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2021-11-09 10:48:18,468 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand has 106 states, 105 states have (on average 2.4761904761904763) internal successors, (260), 106 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:20,629 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2021-11-09 10:48:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-11-09 10:48:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 2.4761904761904763) internal successors, (260), 106 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2021-11-09 10:48:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:20,631 INFO L225 Difference]: With dead ends: 269 [2021-11-09 10:48:20,631 INFO L226 Difference]: Without dead ends: 268 [2021-11-09 10:48:20,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7047, Invalid=17759, Unknown=0, NotChecked=0, Total=24806 [2021-11-09 10:48:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-09 10:48:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2021-11-09 10:48:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 265 states have (on average 1.0075471698113208) internal successors, (267), 266 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2021-11-09 10:48:20,639 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 260 [2021-11-09 10:48:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:20,639 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2021-11-09 10:48:20,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 2.4761904761904763) internal successors, (260), 106 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2021-11-09 10:48:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-09 10:48:20,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:20,640 INFO L513 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 1, 1, 1, 1] [2021-11-09 10:48:20,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:20,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-11-09 10:48:20,841 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:48:20,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1671747315, now seen corresponding path program 51 times [2021-11-09 10:48:20,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:20,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398424439] [2021-11-09 10:48:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:20,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6579 backedges. 0 proven. 6579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:24,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:24,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398424439] [2021-11-09 10:48:24,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398424439] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:24,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680951518] [2021-11-09 10:48:24,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:48:24,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:24,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:24,523 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:24,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-11-09 10:48:30,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-09 10:48:30,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:30,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 105 conjunts are in the unsatisfiable core [2021-11-09 10:48:30,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6579 backedges. 0 proven. 6579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:30,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680951518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:30,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:30,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2021-11-09 10:48:30,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63581042] [2021-11-09 10:48:30,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-11-09 10:48:30,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-11-09 10:48:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2021-11-09 10:48:30,965 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand has 106 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 106 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:33,168 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2021-11-09 10:48:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-11-09 10:48:33,169 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 106 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2021-11-09 10:48:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:33,170 INFO L225 Difference]: With dead ends: 271 [2021-11-09 10:48:33,170 INFO L226 Difference]: Without dead ends: 270 [2021-11-09 10:48:33,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7047, Invalid=17759, Unknown=0, NotChecked=0, Total=24806 [2021-11-09 10:48:33,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-09 10:48:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2021-11-09 10:48:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2021-11-09 10:48:33,178 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 262 [2021-11-09 10:48:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:33,179 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2021-11-09 10:48:33,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 106 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2021-11-09 10:48:33,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-09 10:48:33,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:33,181 INFO L513 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 1, 1, 1, 1] [2021-11-09 10:48:33,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:33,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-11-09 10:48:33,395 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:48:33,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1416449883, now seen corresponding path program 52 times [2021-11-09 10:48:33,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:33,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468961224] [2021-11-09 10:48:33,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:33,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:37,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:37,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468961224] [2021-11-09 10:48:37,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468961224] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:37,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652987239] [2021-11-09 10:48:37,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:48:37,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:37,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:37,084 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:37,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-11-09 10:48:42,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:48:42,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:42,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 108 conjunts are in the unsatisfiable core [2021-11-09 10:48:42,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:43,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652987239] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:43,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:43,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2021-11-09 10:48:43,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393699663] [2021-11-09 10:48:43,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-11-09 10:48:43,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-11-09 10:48:43,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2021-11-09 10:48:43,224 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand has 108 states, 107 states have (on average 2.4766355140186915) internal successors, (265), 108 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:45,317 INFO L93 Difference]: Finished difference Result 274 states and 274 transitions. [2021-11-09 10:48:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 10:48:45,318 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 2.4766355140186915) internal successors, (265), 108 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2021-11-09 10:48:45,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:45,318 INFO L225 Difference]: With dead ends: 274 [2021-11-09 10:48:45,318 INFO L226 Difference]: Without dead ends: 273 [2021-11-09 10:48:45,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7315, Invalid=18445, Unknown=0, NotChecked=0, Total=25760 [2021-11-09 10:48:45,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-09 10:48:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 272. [2021-11-09 10:48:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 270 states have (on average 1.0074074074074073) internal successors, (272), 271 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2021-11-09 10:48:45,325 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 265 [2021-11-09 10:48:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:45,326 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2021-11-09 10:48:45,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 2.4766355140186915) internal successors, (265), 108 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2021-11-09 10:48:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-09 10:48:45,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:45,328 INFO L513 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 1, 1, 1, 1] [2021-11-09 10:48:45,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:45,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:45,551 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:48:45,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:45,551 INFO L85 PathProgramCache]: Analyzing trace with hash 296296871, now seen corresponding path program 52 times [2021-11-09 10:48:45,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:45,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552678739] [2021-11-09 10:48:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:45,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6838 backedges. 0 proven. 6838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:48,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:48,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552678739] [2021-11-09 10:48:48,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552678739] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:48,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812836614] [2021-11-09 10:48:48,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:48:48,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:48,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:48,712 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:48,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-11-09 10:48:53,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:48:53,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:53,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-09 10:48:53,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6838 backedges. 0 proven. 6838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:54,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812836614] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:54,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:54,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2021-11-09 10:48:54,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072942160] [2021-11-09 10:48:54,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-11-09 10:48:54,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:54,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-11-09 10:48:54,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2021-11-09 10:48:54,218 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand has 108 states, 107 states have (on average 2.4953271028037385) internal successors, (267), 108 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:56,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:56,205 INFO L93 Difference]: Finished difference Result 276 states and 276 transitions. [2021-11-09 10:48:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 10:48:56,205 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 2.4953271028037385) internal successors, (267), 108 states have internal predecessors, (267), 0 states have call successors, (0), 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 267 [2021-11-09 10:48:56,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:56,206 INFO L225 Difference]: With dead ends: 276 [2021-11-09 10:48:56,206 INFO L226 Difference]: Without dead ends: 275 [2021-11-09 10:48:56,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7315, Invalid=18445, Unknown=0, NotChecked=0, Total=25760 [2021-11-09 10:48:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-09 10:48:56,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 274. [2021-11-09 10:48:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 272 states have (on average 1.0073529411764706) internal successors, (274), 273 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2021-11-09 10:48:56,214 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 267 [2021-11-09 10:48:56,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:56,215 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2021-11-09 10:48:56,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 2.4953271028037385) internal successors, (267), 108 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2021-11-09 10:48:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-09 10:48:56,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:56,217 INFO L513 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 1, 1, 1, 1] [2021-11-09 10:48:56,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:56,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:56,423 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:48:56,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash 822344049, now seen corresponding path program 53 times [2021-11-09 10:48:56,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:56,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647483171] [2021-11-09 10:48:56,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:56,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:59,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:59,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647483171] [2021-11-09 10:48:59,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647483171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:59,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38661552] [2021-11-09 10:48:59,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:48:59,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:59,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:59,889 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:59,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-11-09 10:49:05,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-09 10:49:05,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:49:05,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-09 10:49:05,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:49:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:05,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38661552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:05,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:49:05,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2021-11-09 10:49:05,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357127115] [2021-11-09 10:49:05,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-11-09 10:49:05,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:49:05,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-11-09 10:49:05,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2021-11-09 10:49:05,816 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand has 110 states, 109 states have (on average 2.477064220183486) internal successors, (270), 110 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:07,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:49:07,809 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2021-11-09 10:49:07,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-09 10:49:07,809 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 2.477064220183486) internal successors, (270), 110 states have internal predecessors, (270), 0 states have call successors, (0), 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 270 [2021-11-09 10:49:07,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:49:07,810 INFO L225 Difference]: With dead ends: 279 [2021-11-09 10:49:07,810 INFO L226 Difference]: Without dead ends: 278 [2021-11-09 10:49:07,811 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7588, Invalid=19144, Unknown=0, NotChecked=0, Total=26732 [2021-11-09 10:49:07,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-09 10:49:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2021-11-09 10:49:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 275 states have (on average 1.0072727272727273) internal successors, (277), 276 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2021-11-09 10:49:07,815 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 270 [2021-11-09 10:49:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:49:07,815 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2021-11-09 10:49:07,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 2.477064220183486) internal successors, (270), 110 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2021-11-09 10:49:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-09 10:49:07,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:49:07,816 INFO L513 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 1, 1, 1, 1] [2021-11-09 10:49:07,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-11-09 10:49:08,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2021-11-09 10:49:08,017 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:49:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1349773, now seen corresponding path program 53 times [2021-11-09 10:49:08,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:49:08,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233716073] [2021-11-09 10:49:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:08,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:49:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:11,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:49:11,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233716073] [2021-11-09 10:49:11,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233716073] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:11,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234945839] [2021-11-09 10:49:11,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:49:11,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:49:11,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:49:11,280 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:49:11,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-11-09 10:49:16,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-09 10:49:16,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:49:16,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-09 10:49:16,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:49:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:17,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234945839] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:17,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:49:17,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2021-11-09 10:49:17,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937478162] [2021-11-09 10:49:17,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-11-09 10:49:17,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:49:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-11-09 10:49:17,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2021-11-09 10:49:17,273 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand has 110 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 110 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:19,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:49:19,309 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2021-11-09 10:49:19,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-09 10:49:19,310 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 110 states have internal predecessors, (272), 0 states have call successors, (0), 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 272 [2021-11-09 10:49:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:49:19,310 INFO L225 Difference]: With dead ends: 281 [2021-11-09 10:49:19,310 INFO L226 Difference]: Without dead ends: 280 [2021-11-09 10:49:19,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7588, Invalid=19144, Unknown=0, NotChecked=0, Total=26732 [2021-11-09 10:49:19,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-09 10:49:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2021-11-09 10:49:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 277 states have (on average 1.0072202166064983) internal successors, (279), 278 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2021-11-09 10:49:19,316 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 272 [2021-11-09 10:49:19,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:49:19,316 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2021-11-09 10:49:19,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 110 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2021-11-09 10:49:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-09 10:49:19,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:49:19,317 INFO L513 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 1, 1, 1, 1] [2021-11-09 10:49:19,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2021-11-09 10:49:19,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:49:19,518 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:49:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1556328411, now seen corresponding path program 54 times [2021-11-09 10:49:19,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:49:19,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766690227] [2021-11-09 10:49:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:19,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:49:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:23,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:49:23,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766690227] [2021-11-09 10:49:23,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766690227] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:23,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846292434] [2021-11-09 10:49:23,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:49:23,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:49:23,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:49:23,261 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:49:23,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-11-09 10:49:28,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-09 10:49:28,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:49:28,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 112 conjunts are in the unsatisfiable core [2021-11-09 10:49:28,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:49:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:29,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846292434] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:29,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:49:29,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2021-11-09 10:49:29,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524167960] [2021-11-09 10:49:29,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-11-09 10:49:29,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:49:29,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-11-09 10:49:29,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2021-11-09 10:49:29,398 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand has 112 states, 111 states have (on average 2.4774774774774775) internal successors, (275), 112 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:49:31,551 INFO L93 Difference]: Finished difference Result 284 states and 284 transitions. [2021-11-09 10:49:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-11-09 10:49:31,552 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.4774774774774775) internal successors, (275), 112 states have internal predecessors, (275), 0 states have call successors, (0), 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 275 [2021-11-09 10:49:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:49:31,553 INFO L225 Difference]: With dead ends: 284 [2021-11-09 10:49:31,553 INFO L226 Difference]: Without dead ends: 283 [2021-11-09 10:49:31,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7866, Invalid=19856, Unknown=0, NotChecked=0, Total=27722 [2021-11-09 10:49:31,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-09 10:49:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2021-11-09 10:49:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2021-11-09 10:49:31,558 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 275 [2021-11-09 10:49:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:49:31,559 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2021-11-09 10:49:31,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 2.4774774774774775) internal successors, (275), 112 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:31,559 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2021-11-09 10:49:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-09 10:49:31,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:49:31,560 INFO L513 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 1, 1, 1, 1] [2021-11-09 10:49:31,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-11-09 10:49:31,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:49:31,760 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:49:31,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:31,761 INFO L85 PathProgramCache]: Analyzing trace with hash -982982361, now seen corresponding path program 54 times [2021-11-09 10:49:31,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:49:31,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575320033] [2021-11-09 10:49:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:31,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:49:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7371 backedges. 0 proven. 7371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:35,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:49:35,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575320033] [2021-11-09 10:49:35,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575320033] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:35,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881122748] [2021-11-09 10:49:35,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:49:35,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:49:35,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:49:35,205 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:49:35,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-11-09 10:49:40,697 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-09 10:49:40,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:49:40,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-09 10:49:40,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:49:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7371 backedges. 0 proven. 7371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:41,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881122748] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:41,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:49:41,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2021-11-09 10:49:41,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420603505] [2021-11-09 10:49:41,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-11-09 10:49:41,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:49:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-11-09 10:49:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2021-11-09 10:49:41,478 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand has 112 states, 111 states have (on average 2.4954954954954953) internal successors, (277), 112 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:49:43,634 INFO L93 Difference]: Finished difference Result 286 states and 286 transitions. [2021-11-09 10:49:43,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-11-09 10:49:43,635 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.4954954954954953) internal successors, (277), 112 states have internal predecessors, (277), 0 states have call successors, (0), 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 277 [2021-11-09 10:49:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:49:43,635 INFO L225 Difference]: With dead ends: 286 [2021-11-09 10:49:43,635 INFO L226 Difference]: Without dead ends: 285 [2021-11-09 10:49:43,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7866, Invalid=19856, Unknown=0, NotChecked=0, Total=27722 [2021-11-09 10:49:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-09 10:49:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2021-11-09 10:49:43,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 1.0070921985815602) internal successors, (284), 283 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2021-11-09 10:49:43,641 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 277 [2021-11-09 10:49:43,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:49:43,641 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2021-11-09 10:49:43,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 2.4954954954954953) internal successors, (277), 112 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2021-11-09 10:49:43,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-09 10:49:43,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:49:43,643 INFO L513 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 1, 1, 1, 1] [2021-11-09 10:49:43,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-11-09 10:49:43,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-11-09 10:49:43,851 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:49:43,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:43,851 INFO L85 PathProgramCache]: Analyzing trace with hash -940439055, now seen corresponding path program 55 times [2021-11-09 10:49:43,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:49:43,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863389201] [2021-11-09 10:49:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:43,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:49:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:47,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:49:47,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863389201] [2021-11-09 10:49:47,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863389201] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:47,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688028295] [2021-11-09 10:49:47,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:49:47,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:49:47,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:49:47,607 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:49:47,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-11-09 10:49:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:52,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-09 10:49:52,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:49:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:53,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688028295] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:53,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:49:53,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2021-11-09 10:49:53,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132302678] [2021-11-09 10:49:53,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-11-09 10:49:53,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:49:53,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-11-09 10:49:53,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2021-11-09 10:49:53,629 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand has 114 states, 113 states have (on average 2.47787610619469) internal successors, (280), 114 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:55,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:49:55,939 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2021-11-09 10:49:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-11-09 10:49:55,940 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 2.47787610619469) internal successors, (280), 114 states have internal predecessors, (280), 0 states have call successors, (0), 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 280 [2021-11-09 10:49:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:49:55,941 INFO L225 Difference]: With dead ends: 289 [2021-11-09 10:49:55,941 INFO L226 Difference]: Without dead ends: 288 [2021-11-09 10:49:55,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8149, Invalid=20581, Unknown=0, NotChecked=0, Total=28730 [2021-11-09 10:49:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-09 10:49:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287. [2021-11-09 10:49:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2021-11-09 10:49:55,947 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 280 [2021-11-09 10:49:55,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:49:55,947 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2021-11-09 10:49:55,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 2.47787610619469) internal successors, (280), 114 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2021-11-09 10:49:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-09 10:49:55,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:49:55,949 INFO L513 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 1, 1, 1, 1] [2021-11-09 10:49:55,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-11-09 10:49:56,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-11-09 10:49:56,150 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:49:56,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1818798093, now seen corresponding path program 55 times [2021-11-09 10:49:56,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:49:56,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037618275] [2021-11-09 10:49:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:56,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:49:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 0 proven. 7645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:49:59,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:49:59,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037618275] [2021-11-09 10:49:59,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037618275] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:59,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787092782] [2021-11-09 10:49:59,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 10:49:59,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:49:59,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:49:59,837 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:49:59,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-11-09 10:50:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:05,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-09 10:50:05,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 0 proven. 7645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:06,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787092782] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:50:06,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:50:06,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2021-11-09 10:50:06,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721554126] [2021-11-09 10:50:06,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-11-09 10:50:06,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:06,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-11-09 10:50:06,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2021-11-09 10:50:06,155 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand has 114 states, 113 states have (on average 2.495575221238938) internal successors, (282), 114 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:08,494 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2021-11-09 10:50:08,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-11-09 10:50:08,494 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 2.495575221238938) internal successors, (282), 114 states have internal predecessors, (282), 0 states have call successors, (0), 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 282 [2021-11-09 10:50:08,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:08,495 INFO L225 Difference]: With dead ends: 291 [2021-11-09 10:50:08,495 INFO L226 Difference]: Without dead ends: 290 [2021-11-09 10:50:08,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8149, Invalid=20581, Unknown=0, NotChecked=0, Total=28730 [2021-11-09 10:50:08,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-09 10:50:08,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2021-11-09 10:50:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 287 states have (on average 1.0069686411149825) internal successors, (289), 288 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2021-11-09 10:50:08,501 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 282 [2021-11-09 10:50:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:08,501 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2021-11-09 10:50:08,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 2.495575221238938) internal successors, (282), 114 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2021-11-09 10:50:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-09 10:50:08,503 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:08,503 INFO L513 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 1, 1, 1, 1] [2021-11-09 10:50:08,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2021-11-09 10:50:08,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-11-09 10:50:08,704 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:50:08,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:08,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1493471141, now seen corresponding path program 56 times [2021-11-09 10:50:08,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:08,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005005834] [2021-11-09 10:50:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:08,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:12,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:12,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005005834] [2021-11-09 10:50:12,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005005834] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:50:12,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876552339] [2021-11-09 10:50:12,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:50:12,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:50:12,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:50:12,608 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:50:12,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-11-09 10:50:18,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:50:18,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:50:18,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 116 conjunts are in the unsatisfiable core [2021-11-09 10:50:18,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:19,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876552339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:50:19,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:50:19,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2021-11-09 10:50:19,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532252342] [2021-11-09 10:50:19,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-11-09 10:50:19,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:19,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-11-09 10:50:19,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2021-11-09 10:50:19,185 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand has 116 states, 115 states have (on average 2.4782608695652173) internal successors, (285), 116 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:21,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:21,517 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions. [2021-11-09 10:50:21,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-11-09 10:50:21,517 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 2.4782608695652173) internal successors, (285), 116 states have internal predecessors, (285), 0 states have call successors, (0), 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 285 [2021-11-09 10:50:21,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:21,518 INFO L225 Difference]: With dead ends: 294 [2021-11-09 10:50:21,518 INFO L226 Difference]: Without dead ends: 293 [2021-11-09 10:50:21,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=8437, Invalid=21319, Unknown=0, NotChecked=0, Total=29756 [2021-11-09 10:50:21,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-09 10:50:21,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292. [2021-11-09 10:50:21,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 290 states have (on average 1.006896551724138) internal successors, (292), 291 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2021-11-09 10:50:21,523 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 285 [2021-11-09 10:50:21,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:21,524 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2021-11-09 10:50:21,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 2.4782608695652173) internal successors, (285), 116 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2021-11-09 10:50:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-09 10:50:21,525 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:21,525 INFO L513 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 1, 1, 1, 1] [2021-11-09 10:50:21,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-11-09 10:50:21,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-11-09 10:50:21,726 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:50:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 706691239, now seen corresponding path program 56 times [2021-11-09 10:50:21,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:21,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385997610] [2021-11-09 10:50:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:21,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7924 backedges. 0 proven. 7924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:25,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:25,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385997610] [2021-11-09 10:50:25,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385997610] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:50:25,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888819068] [2021-11-09 10:50:25,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:50:25,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:50:25,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:50:25,627 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:50:25,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-11-09 10:50:31,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:50:31,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:50:31,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 115 conjunts are in the unsatisfiable core [2021-11-09 10:50:31,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7924 backedges. 0 proven. 7924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:31,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888819068] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:50:31,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:50:31,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2021-11-09 10:50:31,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168964944] [2021-11-09 10:50:31,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-11-09 10:50:31,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:31,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-11-09 10:50:31,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2021-11-09 10:50:31,979 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand has 116 states, 115 states have (on average 2.4956521739130433) internal successors, (287), 116 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:34,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:34,434 INFO L93 Difference]: Finished difference Result 296 states and 296 transitions. [2021-11-09 10:50:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-11-09 10:50:34,434 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 2.4956521739130433) internal successors, (287), 116 states have internal predecessors, (287), 0 states have call successors, (0), 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 287 [2021-11-09 10:50:34,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:34,435 INFO L225 Difference]: With dead ends: 296 [2021-11-09 10:50:34,435 INFO L226 Difference]: Without dead ends: 295 [2021-11-09 10:50:34,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8437, Invalid=21319, Unknown=0, NotChecked=0, Total=29756 [2021-11-09 10:50:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-09 10:50:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-11-09 10:50:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2021-11-09 10:50:34,440 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 287 [2021-11-09 10:50:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:34,440 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2021-11-09 10:50:34,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 2.4956521739130433) internal successors, (287), 116 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2021-11-09 10:50:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-09 10:50:34,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:34,441 INFO L513 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 57, 1, 1, 1, 1] [2021-11-09 10:50:34,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:34,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:50:34,642 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:50:34,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:34,642 INFO L85 PathProgramCache]: Analyzing trace with hash -890930575, now seen corresponding path program 57 times [2021-11-09 10:50:34,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:34,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005702355] [2021-11-09 10:50:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:34,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:38,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:38,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005702355] [2021-11-09 10:50:38,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005702355] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:50:38,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215484304] [2021-11-09 10:50:38,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:50:38,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:50:38,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:50:38,422 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:50:38,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-11-09 10:50:44,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-09 10:50:44,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:50:44,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 118 conjunts are in the unsatisfiable core [2021-11-09 10:50:44,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:45,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215484304] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:50:45,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:50:45,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2021-11-09 10:50:45,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222934749] [2021-11-09 10:50:45,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-11-09 10:50:45,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:45,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-11-09 10:50:45,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2021-11-09 10:50:45,402 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand has 118 states, 117 states have (on average 2.4786324786324787) internal successors, (290), 118 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:47,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:47,756 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2021-11-09 10:50:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-11-09 10:50:47,757 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 2.4786324786324787) internal successors, (290), 118 states have internal predecessors, (290), 0 states have call successors, (0), 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 290 [2021-11-09 10:50:47,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:47,757 INFO L225 Difference]: With dead ends: 299 [2021-11-09 10:50:47,758 INFO L226 Difference]: Without dead ends: 298 [2021-11-09 10:50:47,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=8730, Invalid=22070, Unknown=0, NotChecked=0, Total=30800 [2021-11-09 10:50:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-09 10:50:47,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2021-11-09 10:50:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 295 states have (on average 1.006779661016949) internal successors, (297), 296 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2021-11-09 10:50:47,763 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 290 [2021-11-09 10:50:47,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:47,764 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2021-11-09 10:50:47,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 2.4786324786324787) internal successors, (290), 118 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:50:47,764 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2021-11-09 10:50:47,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-09 10:50:47,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:47,765 INFO L513 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 1, 1, 1, 1] [2021-11-09 10:50:47,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2021-11-09 10:50:47,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:50:47,979 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:50:47,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:47,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1485789069, now seen corresponding path program 57 times [2021-11-09 10:50:47,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:50:47,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414761307] [2021-11-09 10:50:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:47,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:50:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:51,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:50:51,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414761307] [2021-11-09 10:50:51,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414761307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:50:51,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522382570] [2021-11-09 10:50:51,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:50:51,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:50:51,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:50:51,846 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:50:51,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-11-09 10:50:57,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-09 10:50:57,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:50:57,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 117 conjunts are in the unsatisfiable core [2021-11-09 10:50:57,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:58,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522382570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:50:58,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:50:58,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2021-11-09 10:50:58,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390803456] [2021-11-09 10:50:58,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-11-09 10:50:58,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:50:58,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-11-09 10:50:58,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2021-11-09 10:50:58,560 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand has 118 states, 117 states have (on average 2.4957264957264957) internal successors, (292), 118 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:51:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:00,954 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2021-11-09 10:51:00,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-11-09 10:51:00,954 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 2.4957264957264957) internal successors, (292), 118 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-11-09 10:51:00,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:00,955 INFO L225 Difference]: With dead ends: 301 [2021-11-09 10:51:00,955 INFO L226 Difference]: Without dead ends: 300 [2021-11-09 10:51:00,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=8730, Invalid=22070, Unknown=0, NotChecked=0, Total=30800 [2021-11-09 10:51:00,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-09 10:51:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2021-11-09 10:51:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:51:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2021-11-09 10:51:00,962 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 292 [2021-11-09 10:51:00,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:00,962 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2021-11-09 10:51:00,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 2.4957264957264957) internal successors, (292), 118 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:51:00,963 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2021-11-09 10:51:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-11-09 10:51:00,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:00,964 INFO L513 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 1, 1, 1, 1] [2021-11-09 10:51:01,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:01,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-11-09 10:51:01,164 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:51:01,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:01,165 INFO L85 PathProgramCache]: Analyzing trace with hash 790851365, now seen corresponding path program 58 times [2021-11-09 10:51:01,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:51:01,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692330056] [2021-11-09 10:51:01,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:01,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:51:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:05,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:51:05,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692330056] [2021-11-09 10:51:05,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692330056] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:51:05,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482532273] [2021-11-09 10:51:05,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:51:05,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:51:05,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:51:05,094 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:51:05,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-11-09 10:51:10,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:51:10,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:51:10,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 120 conjunts are in the unsatisfiable core [2021-11-09 10:51:10,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:11,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482532273] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:51:11,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:51:11,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2021-11-09 10:51:11,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586697659] [2021-11-09 10:51:11,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-11-09 10:51:11,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:51:11,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-11-09 10:51:11,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2021-11-09 10:51:11,623 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand has 120 states, 119 states have (on average 2.4789915966386555) internal successors, (295), 120 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:51:14,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:14,140 INFO L93 Difference]: Finished difference Result 304 states and 304 transitions. [2021-11-09 10:51:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-11-09 10:51:14,141 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 2.4789915966386555) internal successors, (295), 120 states have internal predecessors, (295), 0 states have call successors, (0), 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 295 [2021-11-09 10:51:14,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:14,142 INFO L225 Difference]: With dead ends: 304 [2021-11-09 10:51:14,142 INFO L226 Difference]: Without dead ends: 303 [2021-11-09 10:51:14,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=9028, Invalid=22834, Unknown=0, NotChecked=0, Total=31862 [2021-11-09 10:51:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-09 10:51:14,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 302. [2021-11-09 10:51:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 300 states have (on average 1.0066666666666666) internal successors, (302), 301 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:51:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2021-11-09 10:51:14,149 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 295 [2021-11-09 10:51:14,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:14,149 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2021-11-09 10:51:14,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 2.4789915966386555) internal successors, (295), 120 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:51:14,150 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2021-11-09 10:51:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-09 10:51:14,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:14,151 INFO L513 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 1, 1, 1, 1] [2021-11-09 10:51:14,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2021-11-09 10:51:14,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-11-09 10:51:14,352 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-09 10:51:14,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:14,352 INFO L85 PathProgramCache]: Analyzing trace with hash -201048025, now seen corresponding path program 58 times [2021-11-09 10:51:14,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:51:14,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749229600] [2021-11-09 10:51:14,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:14,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:51:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8497 backedges. 0 proven. 8497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:18,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:51:18,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749229600] [2021-11-09 10:51:18,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749229600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:51:18,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385007942] [2021-11-09 10:51:18,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:51:18,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:51:18,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:51:18,373 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:51:18,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c349cc-62a1-4ee9-a4ef-ce9ee0bb55f2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-11-09 10:51:24,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:51:24,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:51:24,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 119 conjunts are in the unsatisfiable core [2021-11-09 10:51:24,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8497 backedges. 0 proven. 8497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:25,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385007942] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:51:25,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:51:25,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2021-11-09 10:51:25,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529437401] [2021-11-09 10:51:25,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-11-09 10:51:25,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:51:25,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-11-09 10:51:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2021-11-09 10:51:25,210 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand has 120 states, 119 states have (on average 2.495798319327731) internal successors, (297), 120 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)