./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y --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 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:00:55,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:00:55,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:00:55,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:00:55,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:00:55,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:00:55,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:00:55,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:00:55,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:00:55,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:00:55,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:00:55,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:00:55,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:00:55,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:00:55,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:00:55,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:00:55,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:00:55,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:00:55,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:00:55,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:00:55,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:00:55,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:00:55,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:00:55,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:00:55,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:00:55,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:00:55,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:00:55,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:00:55,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:00:55,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:00:55,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:00:55,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:00:55,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:00:55,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:00:55,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:00:55,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:00:55,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:00:55,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:00:55,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:00:55,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:00:55,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:00:55,525 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-13 18:00:55,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:00:55,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:00:55,582 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:00:55,582 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:00:55,583 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:00:55,583 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:00:55,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:00:55,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:00:55,585 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:00:55,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:00:55,585 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:00:55,585 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:00:55,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:00:55,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:00:55,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:00:55,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:00:55,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:00:55,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:00:55,587 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-13 18:00:55,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:00:55,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:00:55,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:00:55,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:00:55,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:00:55,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:00:55,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:00:55,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:00:55,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:00:55,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:00:55,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:00:55,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:00:55,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:00:55,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:00:55,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:00:55,590 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_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 [2021-11-13 18:00:55,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:00:55,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:00:55,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:00:55,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:00:55,896 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:00:55,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2021-11-13 18:00:55,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/data/f0024a361/0cddd4f01643440aa5cf9d76a3e06ba1/FLAGf87e2bfe0 [2021-11-13 18:00:56,505 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:00:56,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2021-11-13 18:00:56,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/data/f0024a361/0cddd4f01643440aa5cf9d76a3e06ba1/FLAGf87e2bfe0 [2021-11-13 18:00:56,870 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/data/f0024a361/0cddd4f01643440aa5cf9d76a3e06ba1 [2021-11-13 18:00:56,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:00:56,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:00:56,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:00:56,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:00:56,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:00:56,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:00:56" (1/1) ... [2021-11-13 18:00:56,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bca1d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:56, skipping insertion in model container [2021-11-13 18:00:56,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:00:56" (1/1) ... [2021-11-13 18:00:56,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:00:56,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:00:57,110 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_e09427b6-45cc-4225-9191-cad3b2161920/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2021-11-13 18:00:57,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:00:57,128 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:00:57,141 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_e09427b6-45cc-4225-9191-cad3b2161920/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2021-11-13 18:00:57,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:00:57,159 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:00:57,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57 WrapperNode [2021-11-13 18:00:57,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:00:57,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:00:57,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:00:57,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:00:57,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (1/1) ... [2021-11-13 18:00:57,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (1/1) ... [2021-11-13 18:00:57,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:00:57,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:00:57,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:00:57,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:00:57,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (1/1) ... [2021-11-13 18:00:57,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (1/1) ... [2021-11-13 18:00:57,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (1/1) ... [2021-11-13 18:00:57,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (1/1) ... [2021-11-13 18:00:57,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (1/1) ... [2021-11-13 18:00:57,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (1/1) ... [2021-11-13 18:00:57,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (1/1) ... [2021-11-13 18:00:57,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:00:57,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:00:57,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:00:57,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:00:57,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (1/1) ... [2021-11-13 18:00:57,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:00:57,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:57,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:00:57,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:00:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:00:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:00:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:00:57,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:00:57,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:00:57,543 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:00:57,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:00:57 BoogieIcfgContainer [2021-11-13 18:00:57,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:00:57,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:00:57,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:00:57,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:00:57,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:00:56" (1/3) ... [2021-11-13 18:00:57,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d75a7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:00:57, skipping insertion in model container [2021-11-13 18:00:57,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:57" (2/3) ... [2021-11-13 18:00:57,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d75a7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:00:57, skipping insertion in model container [2021-11-13 18:00:57,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:00:57" (3/3) ... [2021-11-13 18:00:57,561 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark38_conjunctive.i [2021-11-13 18:00:57,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:00:57,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-13 18:00:57,611 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:00:57,628 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 [2021-11-13 18:00:57,628 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 18:00:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 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) [2021-11-13 18:00:57,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-13 18:00:57,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:57,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-13 18:00:57,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:00:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-11-13 18:00:57,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:57,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281984231] [2021-11-13 18:00:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:57,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:57,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:57,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281984231] [2021-11-13 18:00:57,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281984231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:57,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:57,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:00:57,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540620718] [2021-11-13 18:00:57,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:57,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:57,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:57,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:57,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:57,942 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-13 18:00:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:58,024 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-11-13 18:00:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:58,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2021-11-13 18:00:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:58,036 INFO L225 Difference]: With dead ends: 43 [2021-11-13 18:00:58,040 INFO L226 Difference]: Without dead ends: 23 [2021-11-13 18:00:58,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:58,057 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.49ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:58,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 1.49ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 58.23ms Time] [2021-11-13 18:00:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-13 18:00:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-11-13 18:00:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 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) [2021-11-13 18:00:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-11-13 18:00:58,119 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-11-13 18:00:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:58,127 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-11-13 18:00:58,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-13 18:00:58,128 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-13 18:00:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-13 18:00:58,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:58,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-13 18:00:58,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:00:58,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:00:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash 28695922, now seen corresponding path program 1 times [2021-11-13 18:00:58,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:58,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209745557] [2021-11-13 18:00:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:58,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:58,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:58,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209745557] [2021-11-13 18:00:58,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209745557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:58,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:58,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:00:58,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069255445] [2021-11-13 18:00:58,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:58,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:58,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:58,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:58,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:58,198 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-13 18:00:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:58,236 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-13 18:00:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:58,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2021-11-13 18:00:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:58,239 INFO L225 Difference]: With dead ends: 27 [2021-11-13 18:00:58,240 INFO L226 Difference]: Without dead ends: 26 [2021-11-13 18:00:58,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:58,244 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.07ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:58,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 3.07ms Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 28.14ms Time] [2021-11-13 18:00:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-13 18:00:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-11-13 18:00:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 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) [2021-11-13 18:00:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-13 18:00:58,257 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2021-11-13 18:00:58,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:58,259 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-13 18:00:58,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-13 18:00:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-13 18:00:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 18:00:58,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:58,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:00:58,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:00:58,264 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:00:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-11-13 18:00:58,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:58,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118349817] [2021-11-13 18:00:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:58,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:58,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:58,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118349817] [2021-11-13 18:00:58,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118349817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:58,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:58,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:00:58,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327537870] [2021-11-13 18:00:58,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:58,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:58,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:58,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:58,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:58,346 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:58,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:58,365 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-13 18:00:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:58,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-13 18:00:58,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:58,367 INFO L225 Difference]: With dead ends: 19 [2021-11-13 18:00:58,368 INFO L226 Difference]: Without dead ends: 18 [2021-11-13 18:00:58,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:58,373 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.05ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.84ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:58,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 5 Unknown, 0 Unchecked, 2.05ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 12.84ms Time] [2021-11-13 18:00:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-13 18:00:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-13 18:00:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 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) [2021-11-13 18:00:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-11-13 18:00:58,388 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2021-11-13 18:00:58,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:58,388 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-11-13 18:00:58,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:58,389 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-13 18:00:58,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 18:00:58,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:58,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:00:58,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:00:58,391 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:00:58,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:58,393 INFO L85 PathProgramCache]: Analyzing trace with hash 889573643, now seen corresponding path program 1 times [2021-11-13 18:00:58,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:58,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477590166] [2021-11-13 18:00:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:58,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:58,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:58,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477590166] [2021-11-13 18:00:58,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477590166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:58,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:58,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:00:58,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750454587] [2021-11-13 18:00:58,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:58,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:58,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:58,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:58,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:58,474 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:58,511 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-11-13 18:00:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:58,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-13 18:00:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:58,515 INFO L225 Difference]: With dead ends: 25 [2021-11-13 18:00:58,516 INFO L226 Difference]: Without dead ends: 22 [2021-11-13 18:00:58,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:58,518 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.95ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:58,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 8 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 30.95ms Time] [2021-11-13 18:00:58,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-13 18:00:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2021-11-13 18:00:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.4166666666666667) 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) [2021-11-13 18:00:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-13 18:00:58,532 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2021-11-13 18:00:58,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:58,532 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-13 18:00:58,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:58,533 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-13 18:00:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:00:58,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:58,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:58,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:00:58,534 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:00:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:58,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-11-13 18:00:58,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:58,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293915289] [2021-11-13 18:00:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:58,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:58,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:58,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293915289] [2021-11-13 18:00:58,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293915289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:58,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:58,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:00:58,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251484655] [2021-11-13 18:00:58,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:58,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:00:58,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:58,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:00:58,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:00:58,581 INFO L87 Difference]: Start difference. First operand 17 states and 17 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) [2021-11-13 18:00:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:58,617 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-11-13 18:00:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:00:58,619 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 [2021-11-13 18:00:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:58,620 INFO L225 Difference]: With dead ends: 22 [2021-11-13 18:00:58,620 INFO L226 Difference]: Without dead ends: 21 [2021-11-13 18:00:58,622 INFO L932 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 [2021-11-13 18:00:58,624 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.82ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:58,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 16 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 21.82ms Time] [2021-11-13 18:00:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-13 18:00:58,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-13 18:00:58,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.3571428571428572) 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) [2021-11-13 18:00:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-13 18:00:58,645 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 7 [2021-11-13 18:00:58,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:58,646 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-13 18:00:58,646 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) [2021-11-13 18:00:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-13 18:00:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 18:00:58,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:58,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:58,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:00:58,648 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:00:58,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-11-13 18:00:58,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:58,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492144351] [2021-11-13 18:00:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:58,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:58,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:58,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492144351] [2021-11-13 18:00:58,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492144351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:58,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:58,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:00:58,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572997380] [2021-11-13 18:00:58,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:58,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:00:58,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:00:58,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:00:58,708 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-13 18:00:58,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:58,742 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-13 18:00:58,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:00:58,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-11-13 18:00:58,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:58,743 INFO L225 Difference]: With dead ends: 19 [2021-11-13 18:00:58,743 INFO L226 Difference]: Without dead ends: 16 [2021-11-13 18:00:58,744 INFO L932 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 [2021-11-13 18:00:58,745 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.64ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:58,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.64ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 24.27ms Time] [2021-11-13 18:00:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-13 18:00:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-13 18:00:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:58,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-13 18:00:58,749 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2021-11-13 18:00:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:58,750 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-13 18:00:58,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-13 18:00:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-13 18:00:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:00:58,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:58,751 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:58,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:00:58,752 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:00:58,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:58,752 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-11-13 18:00:58,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:58,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764115405] [2021-11-13 18:00:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:58,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:58,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:58,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764115405] [2021-11-13 18:00:58,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764115405] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:00:58,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753040945] [2021-11-13 18:00:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:58,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:58,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:58,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:00:58,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:00:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:58,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:00:58,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:58,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:59,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:59,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753040945] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:00:59,095 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:00:59,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-13 18:00:59,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731018304] [2021-11-13 18:00:59,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:00:59,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:00:59,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:00:59,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:00:59,098 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:59,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:59,143 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-11-13 18:00:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:00:59,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2021-11-13 18:00:59,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:59,144 INFO L225 Difference]: With dead ends: 38 [2021-11-13 18:00:59,149 INFO L226 Difference]: Without dead ends: 37 [2021-11-13 18:00:59,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:00:59,151 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.05ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:59,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 36 Invalid, 18 Unknown, 0 Unchecked, 1.05ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 35.98ms Time] [2021-11-13 18:00:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-13 18:00:59,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2021-11-13 18:00:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 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) [2021-11-13 18:00:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-13 18:00:59,161 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 10 [2021-11-13 18:00:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:59,162 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-13 18:00:59,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-13 18:00:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:00:59,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:59,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:59,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:59,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-13 18:00:59,364 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:00:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:59,365 INFO L85 PathProgramCache]: Analyzing trace with hash 47508542, now seen corresponding path program 1 times [2021-11-13 18:00:59,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:59,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094533039] [2021-11-13 18:00:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:59,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:59,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:59,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094533039] [2021-11-13 18:00:59,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094533039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:00:59,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941427616] [2021-11-13 18:00:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:59,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:59,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:59,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:00:59,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:00:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:59,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:00:59,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:59,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:59,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941427616] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:00:59,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:00:59,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-13 18:00:59,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089871797] [2021-11-13 18:00:59,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:00:59,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:00:59,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:59,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:00:59,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:00:59,579 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:59,649 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-11-13 18:00:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:00:59,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2021-11-13 18:00:59,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:59,651 INFO L225 Difference]: With dead ends: 34 [2021-11-13 18:00:59,651 INFO L226 Difference]: Without dead ends: 30 [2021-11-13 18:00:59,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:00:59,653 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:59,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 41.38ms Time] [2021-11-13 18:00:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-13 18:00:59,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-13 18:00:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-11-13 18:00:59,673 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 10 [2021-11-13 18:00:59,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:59,673 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-11-13 18:00:59,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:59,674 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-11-13 18:00:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:00:59,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:59,675 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-11-13 18:00:59,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:59,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:59,876 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:00:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash 120622631, now seen corresponding path program 1 times [2021-11-13 18:00:59,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:59,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113293992] [2021-11-13 18:00:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:59,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:59,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:59,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113293992] [2021-11-13 18:00:59,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113293992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:00:59,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173802323] [2021-11-13 18:00:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:59,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:59,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:59,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:00:59,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:01:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:00,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:01:00,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:00,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:00,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173802323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:00,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:00,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-13 18:01:00,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118913052] [2021-11-13 18:01:00,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:00,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:01:00,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:01:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:01:00,209 INFO L87 Difference]: Start difference. First operand 29 states and 31 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) [2021-11-13 18:01:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:00,379 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-11-13 18:01:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:01:00,382 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 17 [2021-11-13 18:01:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:00,386 INFO L225 Difference]: With dead ends: 51 [2021-11-13 18:01:00,387 INFO L226 Difference]: Without dead ends: 50 [2021-11-13 18:01:00,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:01:00,392 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 34 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.64ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:00,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 55 Invalid, 57 Unknown, 0 Unchecked, 6.64ms Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 55.94ms Time] [2021-11-13 18:01:00,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-13 18:01:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-11-13 18:01:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-11-13 18:01:00,415 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 17 [2021-11-13 18:01:00,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:00,416 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-11-13 18:01:00,416 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) [2021-11-13 18:01:00,416 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-11-13 18:01:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:01:00,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:00,418 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-11-13 18:01:00,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:00,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:00,633 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1418773314, now seen corresponding path program 2 times [2021-11-13 18:01:00,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:00,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859210505] [2021-11-13 18:01:00,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:00,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:00,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:00,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859210505] [2021-11-13 18:01:00,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859210505] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:00,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978637835] [2021-11-13 18:01:00,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:01:00,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:00,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:00,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:00,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:01:00,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:01:00,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:00,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:01:00,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:00,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:01,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978637835] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:01,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:01,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-13 18:01:01,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12824770] [2021-11-13 18:01:01,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:01,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:01:01,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:01,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:01:01,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:01:01,024 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:01,148 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-11-13 18:01:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:01:01,149 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 [2021-11-13 18:01:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:01,150 INFO L225 Difference]: With dead ends: 56 [2021-11-13 18:01:01,150 INFO L226 Difference]: Without dead ends: 51 [2021-11-13 18:01:01,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:01:01,152 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 64 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.62ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.75ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:01,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 65 Invalid, 54 Unknown, 0 Unchecked, 1.62ms Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 51.75ms Time] [2021-11-13 18:01:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-13 18:01:01,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2021-11-13 18:01:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.125) internal successors, (45), 42 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) [2021-11-13 18:01:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-11-13 18:01:01,159 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 20 [2021-11-13 18:01:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:01,160 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-11-13 18:01:01,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-11-13 18:01:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 18:01:01,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:01,162 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-11-13 18:01:01,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:01,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 18:01:01,374 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:01,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:01,374 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 2 times [2021-11-13 18:01:01,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:01,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037412007] [2021-11-13 18:01:01,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:01,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:01,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:01,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037412007] [2021-11-13 18:01:01,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037412007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:01,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923392185] [2021-11-13 18:01:01,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:01:01,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:01,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:01,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:01,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:01:01,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:01:01,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:01,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:01:01,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:01,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:01,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923392185] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:01,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:01,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-13 18:01:01,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933478844] [2021-11-13 18:01:01,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:01,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:01:01,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:01,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:01:01,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:01:01,740 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:01,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:01,786 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-11-13 18:01:01,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:01:01,787 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2021-11-13 18:01:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:01,789 INFO L225 Difference]: With dead ends: 69 [2021-11-13 18:01:01,789 INFO L226 Difference]: Without dead ends: 68 [2021-11-13 18:01:01,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:01:01,790 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.28ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:01,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 61 Invalid, 36 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 28.28ms Time] [2021-11-13 18:01:01,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-13 18:01:01,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2021-11-13 18:01:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 58 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) [2021-11-13 18:01:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2021-11-13 18:01:01,811 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 25 [2021-11-13 18:01:01,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:01,812 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2021-11-13 18:01:01,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2021-11-13 18:01:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-13 18:01:01,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:01,814 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2021-11-13 18:01:01,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:02,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 18:01:02,025 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:02,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash -365728473, now seen corresponding path program 2 times [2021-11-13 18:01:02,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:02,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3697668] [2021-11-13 18:01:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:02,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:02,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:02,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3697668] [2021-11-13 18:01:02,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3697668] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:02,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130482899] [2021-11-13 18:01:02,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:01:02,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:02,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:02,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:02,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:01:02,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:01:02,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:02,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 18:01:02,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:02,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:02,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130482899] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:02,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:02,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2021-11-13 18:01:02,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403994122] [2021-11-13 18:01:02,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:02,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-13 18:01:02,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:02,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-13 18:01:02,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-11-13 18:01:02,846 INFO L87 Difference]: Start difference. First operand 59 states and 65 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) [2021-11-13 18:01:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:03,211 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2021-11-13 18:01:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 18:01:03,212 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 37 [2021-11-13 18:01:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:03,217 INFO L225 Difference]: With dead ends: 101 [2021-11-13 18:01:03,217 INFO L226 Difference]: Without dead ends: 100 [2021-11-13 18:01:03,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2021-11-13 18:01:03,220 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 96 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.18ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:03,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 86 Invalid, 113 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [10 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 103.18ms Time] [2021-11-13 18:01:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-13 18:01:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2021-11-13 18:01:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 80 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) [2021-11-13 18:01:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2021-11-13 18:01:03,241 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 37 [2021-11-13 18:01:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:03,241 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2021-11-13 18:01:03,242 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) [2021-11-13 18:01:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2021-11-13 18:01:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 18:01:03,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:03,251 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2021-11-13 18:01:03,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:03,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:03,465 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:03,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:03,465 INFO L85 PathProgramCache]: Analyzing trace with hash 915144126, now seen corresponding path program 3 times [2021-11-13 18:01:03,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:03,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188380197] [2021-11-13 18:01:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:03,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:03,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:03,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188380197] [2021-11-13 18:01:03,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188380197] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:03,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966327620] [2021-11-13 18:01:03,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:01:03,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:03,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:03,641 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:03,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:01:03,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 18:01:03,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:03,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 18:01:03,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:03,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:04,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966327620] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:04,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:04,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2021-11-13 18:01:04,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165675294] [2021-11-13 18:01:04,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:04,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-13 18:01:04,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:04,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-13 18:01:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2021-11-13 18:01:04,219 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:04,550 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2021-11-13 18:01:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 18:01:04,551 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 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 [2021-11-13 18:01:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:04,553 INFO L225 Difference]: With dead ends: 102 [2021-11-13 18:01:04,553 INFO L226 Difference]: Without dead ends: 93 [2021-11-13 18:01:04,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=623, Invalid=1447, Unknown=0, NotChecked=0, Total=2070 [2021-11-13 18:01:04,555 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 103 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.44ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:04,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 117 Invalid, 117 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 103.44ms Time] [2021-11-13 18:01:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-13 18:01:04,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2021-11-13 18:01:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.0875) internal successors, (87), 82 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) [2021-11-13 18:01:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2021-11-13 18:01:04,564 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 40 [2021-11-13 18:01:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:04,565 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2021-11-13 18:01:04,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:04,565 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2021-11-13 18:01:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 18:01:04,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:04,567 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-11-13 18:01:04,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:04,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:04,781 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:04,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:04,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 3 times [2021-11-13 18:01:04,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:04,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182680002] [2021-11-13 18:01:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:04,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:04,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:04,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182680002] [2021-11-13 18:01:04,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182680002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:04,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523085096] [2021-11-13 18:01:04,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:01:04,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:04,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:04,912 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:04,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:01:05,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-13 18:01:05,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:05,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 18:01:05,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:05,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:05,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523085096] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:05,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:05,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-13 18:01:05,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690533794] [2021-11-13 18:01:05,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:05,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 18:01:05,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 18:01:05,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-13 18:01:05,496 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 24 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:05,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:05,591 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2021-11-13 18:01:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-13 18:01:05,591 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 24 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-13 18:01:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:05,594 INFO L225 Difference]: With dead ends: 141 [2021-11-13 18:01:05,594 INFO L226 Difference]: Without dead ends: 140 [2021-11-13 18:01:05,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-13 18:01:05,596 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 80 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:05,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 111 Invalid, 69 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 71.50ms Time] [2021-11-13 18:01:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-13 18:01:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 119. [2021-11-13 18:01:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.146551724137931) internal successors, (133), 118 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2021-11-13 18:01:05,620 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 55 [2021-11-13 18:01:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:05,621 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2021-11-13 18:01:05,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 24 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2021-11-13 18:01:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 18:01:05,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:05,625 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1] [2021-11-13 18:01:05,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:05,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-13 18:01:05,841 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:05,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:05,841 INFO L85 PathProgramCache]: Analyzing trace with hash 881371943, now seen corresponding path program 3 times [2021-11-13 18:01:05,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:05,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278687909] [2021-11-13 18:01:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:05,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:06,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:06,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278687909] [2021-11-13 18:01:06,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278687909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:06,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400144283] [2021-11-13 18:01:06,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:01:06,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:06,253 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:06,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 18:01:06,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-13 18:01:06,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:06,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-13 18:01:06,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:06,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:07,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400144283] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:07,606 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:07,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2021-11-13 18:01:07,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896402300] [2021-11-13 18:01:07,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:07,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-13 18:01:07,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:07,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-13 18:01:07,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2021-11-13 18:01:07,611 INFO L87 Difference]: Start difference. First operand 119 states and 133 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) [2021-11-13 18:01:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:08,502 INFO L93 Difference]: Finished difference Result 201 states and 216 transitions. [2021-11-13 18:01:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-13 18:01:08,503 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 77 [2021-11-13 18:01:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:08,505 INFO L225 Difference]: With dead ends: 201 [2021-11-13 18:01:08,505 INFO L226 Difference]: Without dead ends: 200 [2021-11-13 18:01:08,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2021-11-13 18:01:08,510 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 326 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.87ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:08,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 127 Invalid, 209 Unknown, 0 Unchecked, 3.87ms Time], IncrementalHoareTripleChecker [20 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 163.13ms Time] [2021-11-13 18:01:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-13 18:01:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 161. [2021-11-13 18:01:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 158 states have (on average 1.1645569620253164) internal successors, (184), 160 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) [2021-11-13 18:01:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 184 transitions. [2021-11-13 18:01:08,520 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 184 transitions. Word has length 77 [2021-11-13 18:01:08,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:08,521 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 184 transitions. [2021-11-13 18:01:08,521 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) [2021-11-13 18:01:08,521 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 184 transitions. [2021-11-13 18:01:08,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 18:01:08,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:08,523 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2021-11-13 18:01:08,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:08,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-13 18:01:08,745 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:08,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:08,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1816526782, now seen corresponding path program 4 times [2021-11-13 18:01:08,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:08,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495777800] [2021-11-13 18:01:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:08,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:09,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:09,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495777800] [2021-11-13 18:01:09,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495777800] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:09,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413557322] [2021-11-13 18:01:09,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:01:09,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:09,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:09,242 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:09,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 18:01:09,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:01:09,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:09,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 18:01:09,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:09,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:10,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413557322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:10,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:10,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2021-11-13 18:01:10,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683879197] [2021-11-13 18:01:10,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:10,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-13 18:01:10,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:10,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-13 18:01:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2021-11-13 18:01:10,595 INFO L87 Difference]: Start difference. First operand 161 states and 184 transitions. Second operand has 64 states, 63 states have (on average 2.507936507936508) internal successors, (158), 64 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:11,454 INFO L93 Difference]: Finished difference Result 194 states and 209 transitions. [2021-11-13 18:01:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-13 18:01:11,455 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.507936507936508) internal successors, (158), 64 states have internal predecessors, (158), 0 states have call successors, (0), 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 [2021-11-13 18:01:11,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:11,456 INFO L225 Difference]: With dead ends: 194 [2021-11-13 18:01:11,456 INFO L226 Difference]: Without dead ends: 177 [2021-11-13 18:01:11,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2527, Invalid=6215, Unknown=0, NotChecked=0, Total=8742 [2021-11-13 18:01:11,461 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 438 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.43ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.48ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:11,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 145 Invalid, 191 Unknown, 0 Unchecked, 3.43ms Time], IncrementalHoareTripleChecker [18 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 136.48ms Time] [2021-11-13 18:01:11,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-13 18:01:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 163. [2021-11-13 18:01:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 160 states have (on average 1.06875) internal successors, (171), 162 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2021-11-13 18:01:11,473 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 80 [2021-11-13 18:01:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:11,474 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2021-11-13 18:01:11,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.507936507936508) internal successors, (158), 64 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:11,475 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2021-11-13 18:01:11,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-13 18:01:11,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:11,483 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-11-13 18:01:11,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:11,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-13 18:01:11,705 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:11,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 4 times [2021-11-13 18:01:11,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:11,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290476836] [2021-11-13 18:01:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:11,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:12,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:12,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290476836] [2021-11-13 18:01:12,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290476836] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:12,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264530907] [2021-11-13 18:01:12,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:01:12,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:12,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:12,053 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:12,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-13 18:01:12,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:01:12,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:12,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-13 18:01:12,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:12,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:13,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264530907] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:13,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:13,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-13 18:01:13,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705608928] [2021-11-13 18:01:13,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:13,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-13 18:01:13,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:13,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-13 18:01:13,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-11-13 18:01:13,383 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 48 states, 47 states have (on average 4.851063829787234) internal successors, (228), 48 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:13,532 INFO L93 Difference]: Finished difference Result 285 states and 308 transitions. [2021-11-13 18:01:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-13 18:01:13,537 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.851063829787234) internal successors, (228), 48 states have internal predecessors, (228), 0 states have call successors, (0), 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 [2021-11-13 18:01:13,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:13,539 INFO L225 Difference]: With dead ends: 285 [2021-11-13 18:01:13,539 INFO L226 Difference]: Without dead ends: 284 [2021-11-13 18:01:13,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-11-13 18:01:13,542 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 229 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.17ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:13,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 209 Invalid, 133 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [26 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 99.17ms Time] [2021-11-13 18:01:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-13 18:01:13,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 239. [2021-11-13 18:01:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 236 states have (on average 1.1398305084745763) internal successors, (269), 238 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) [2021-11-13 18:01:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2021-11-13 18:01:13,558 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 115 [2021-11-13 18:01:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:13,559 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2021-11-13 18:01:13,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.851063829787234) internal successors, (228), 48 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:13,559 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2021-11-13 18:01:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-13 18:01:13,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:13,561 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1] [2021-11-13 18:01:13,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:13,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-13 18:01:13,775 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash -881776857, now seen corresponding path program 4 times [2021-11-13 18:01:13,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:13,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647963103] [2021-11-13 18:01:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:13,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:14,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:14,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647963103] [2021-11-13 18:01:14,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647963103] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:14,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308123965] [2021-11-13 18:01:14,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:01:14,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:14,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:14,926 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:14,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-13 18:01:15,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:01:15,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:15,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-13 18:01:15,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:15,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:18,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308123965] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:18,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:18,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 125 [2021-11-13 18:01:18,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528258323] [2021-11-13 18:01:18,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:18,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-11-13 18:01:18,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-11-13 18:01:18,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2021-11-13 18:01:18,635 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand has 126 states, 125 states have (on average 2.496) internal successors, (312), 126 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:21,093 INFO L93 Difference]: Finished difference Result 401 states and 432 transitions. [2021-11-13 18:01:21,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-13 18:01:21,095 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 2.496) internal successors, (312), 126 states have internal predecessors, (312), 0 states have call successors, (0), 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 [2021-11-13 18:01:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:21,098 INFO L225 Difference]: With dead ends: 401 [2021-11-13 18:01:21,098 INFO L226 Difference]: Without dead ends: 400 [2021-11-13 18:01:21,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7382 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=9952, Invalid=25204, Unknown=0, NotChecked=0, Total=35156 [2021-11-13 18:01:21,107 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 720 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.51ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 274.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:21,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 205 Invalid, 393 Unknown, 0 Unchecked, 4.51ms Time], IncrementalHoareTripleChecker [35 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 274.12ms Time] [2021-11-13 18:01:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-11-13 18:01:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 321. [2021-11-13 18:01:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 318 states have (on average 1.1572327044025157) internal successors, (368), 320 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 368 transitions. [2021-11-13 18:01:21,120 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 368 transitions. Word has length 157 [2021-11-13 18:01:21,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:21,121 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 368 transitions. [2021-11-13 18:01:21,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 2.496) internal successors, (312), 126 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:21,121 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 368 transitions. [2021-11-13 18:01:21,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-13 18:01:21,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:21,124 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2021-11-13 18:01:21,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:21,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-13 18:01:21,349 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:21,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:21,349 INFO L85 PathProgramCache]: Analyzing trace with hash -994311234, now seen corresponding path program 5 times [2021-11-13 18:01:21,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:21,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321146170] [2021-11-13 18:01:21,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:21,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:22,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:22,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321146170] [2021-11-13 18:01:22,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321146170] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:22,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90687252] [2021-11-13 18:01:22,700 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:01:22,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:22,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:22,702 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:22,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 18:01:22,972 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-11-13 18:01:22,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:22,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-13 18:01:22,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:23,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:26,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90687252] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:26,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:26,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2021-11-13 18:01:26,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570669052] [2021-11-13 18:01:26,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:26,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-13 18:01:26,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:26,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-13 18:01:26,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2021-11-13 18:01:26,384 INFO L87 Difference]: Start difference. First operand 321 states and 368 transitions. Second operand has 128 states, 127 states have (on average 2.5039370078740157) internal successors, (318), 128 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:29,204 INFO L93 Difference]: Finished difference Result 378 states and 409 transitions. [2021-11-13 18:01:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-13 18:01:29,206 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 2.5039370078740157) internal successors, (318), 128 states have internal predecessors, (318), 0 states have call successors, (0), 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 [2021-11-13 18:01:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:29,208 INFO L225 Difference]: With dead ends: 378 [2021-11-13 18:01:29,208 INFO L226 Difference]: Without dead ends: 345 [2021-11-13 18:01:29,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7534 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=10175, Invalid=25735, Unknown=0, NotChecked=0, Total=35910 [2021-11-13 18:01:29,213 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 779 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 230.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.55ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 319.82ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:29,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 244 Invalid, 377 Unknown, 0 Unchecked, 4.55ms Time], IncrementalHoareTripleChecker [35 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 319.82ms Time] [2021-11-13 18:01:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-13 18:01:29,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2021-11-13 18:01:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 320 states have (on average 1.059375) internal successors, (339), 322 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 339 transitions. [2021-11-13 18:01:29,227 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 339 transitions. Word has length 160 [2021-11-13 18:01:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:29,227 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 339 transitions. [2021-11-13 18:01:29,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 2.5039370078740157) internal successors, (318), 128 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 339 transitions. [2021-11-13 18:01:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-13 18:01:29,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:29,232 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-11-13 18:01:29,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:29,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:29,461 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:29,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:29,461 INFO L85 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 5 times [2021-11-13 18:01:29,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:29,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498833084] [2021-11-13 18:01:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:29,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:30,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:30,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498833084] [2021-11-13 18:01:30,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498833084] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:30,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175031209] [2021-11-13 18:01:30,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:01:30,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:30,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:30,560 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:30,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-13 18:01:30,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-11-13 18:01:30,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:30,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 18:01:30,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:31,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:34,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175031209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:34,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:34,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-13 18:01:34,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930851569] [2021-11-13 18:01:34,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:34,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-13 18:01:34,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:34,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-13 18:01:34,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-11-13 18:01:34,058 INFO L87 Difference]: Start difference. First operand 323 states and 339 transitions. Second operand has 96 states, 95 states have (on average 4.926315789473684) internal successors, (468), 96 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:34,484 INFO L93 Difference]: Finished difference Result 573 states and 620 transitions. [2021-11-13 18:01:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-13 18:01:34,484 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.926315789473684) internal successors, (468), 96 states have internal predecessors, (468), 0 states have call successors, (0), 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 [2021-11-13 18:01:34,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:34,488 INFO L225 Difference]: With dead ends: 573 [2021-11-13 18:01:34,488 INFO L226 Difference]: Without dead ends: 572 [2021-11-13 18:01:34,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-11-13 18:01:34,490 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 449 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 219.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:34,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 402 Invalid, 253 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [54 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 219.71ms Time] [2021-11-13 18:01:34,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-11-13 18:01:34,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 479. [2021-11-13 18:01:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 476 states have (on average 1.1365546218487395) internal successors, (541), 478 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 541 transitions. [2021-11-13 18:01:34,507 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 541 transitions. Word has length 235 [2021-11-13 18:01:34,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:34,508 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 541 transitions. [2021-11-13 18:01:34,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.926315789473684) internal successors, (468), 96 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 541 transitions. [2021-11-13 18:01:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-13 18:01:34,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:34,515 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 1, 1, 1, 1] [2021-11-13 18:01:34,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:01:34,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:34,732 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:01:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1975902425, now seen corresponding path program 5 times [2021-11-13 18:01:34,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:34,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209167801] [2021-11-13 18:01:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:34,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:39,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:39,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209167801] [2021-11-13 18:01:39,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209167801] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:01:39,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32666076] [2021-11-13 18:01:39,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:01:39,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:01:39,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:39,829 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:01:39,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 18:01:40,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2021-11-13 18:01:40,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:01:40,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-13 18:01:40,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:01:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:41,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:01:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:01:52,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32666076] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:01:52,251 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:01:52,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127, 127] total 253 [2021-11-13 18:01:52,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789066084] [2021-11-13 18:01:52,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:01:52,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 254 states [2021-11-13 18:01:52,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2021-11-13 18:01:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16255, Invalid=48007, Unknown=0, NotChecked=0, Total=64262 [2021-11-13 18:01:52,264 INFO L87 Difference]: Start difference. First operand 479 states and 541 transitions. Second operand has 254 states, 253 states have (on average 2.4980237154150196) internal successors, (632), 254 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:02:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:02:03,133 INFO L93 Difference]: Finished difference Result 801 states and 864 transitions. [2021-11-13 18:02:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2021-11-13 18:02:03,134 INFO L78 Accepts]: Start accepts. Automaton has has 254 states, 253 states have (on average 2.4980237154150196) internal successors, (632), 254 states have internal predecessors, (632), 0 states have call successors, (0), 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 317 [2021-11-13 18:02:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:02:03,139 INFO L225 Difference]: With dead ends: 801 [2021-11-13 18:02:03,140 INFO L226 Difference]: Without dead ends: 800 [2021-11-13 18:02:03,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31126 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=40384, Invalid=103636, Unknown=0, NotChecked=0, Total=144020 [2021-11-13 18:02:03,151 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1681 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 448.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.38ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 571.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:02:03,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 413 Invalid, 793 Unknown, 0 Unchecked, 7.38ms Time], IncrementalHoareTripleChecker [67 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 571.22ms Time] [2021-11-13 18:02:03,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-11-13 18:02:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 641. [2021-11-13 18:02:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 638 states have (on average 1.1536050156739812) internal successors, (736), 640 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:02:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 736 transitions. [2021-11-13 18:02:03,180 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 736 transitions. Word has length 317 [2021-11-13 18:02:03,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:02:03,181 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 736 transitions. [2021-11-13 18:02:03,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 254 states, 253 states have (on average 2.4980237154150196) internal successors, (632), 254 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:02:03,182 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 736 transitions. [2021-11-13 18:02:03,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-13 18:02:03,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:02:03,185 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2021-11-13 18:02:03,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:02:03,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:02:03,405 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:02:03,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:02:03,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1582298178, now seen corresponding path program 6 times [2021-11-13 18:02:03,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:02:03,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633183862] [2021-11-13 18:02:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:02:03,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:02:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:02:08,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:02:08,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633183862] [2021-11-13 18:02:08,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633183862] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:02:08,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067387690] [2021-11-13 18:02:08,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:02:08,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:02:08,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:02:08,655 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:02:08,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-13 18:02:09,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2021-11-13 18:02:09,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:02:09,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 128 conjunts are in the unsatisfiable core [2021-11-13 18:02:09,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:02:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:02:10,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:02:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:02:21,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067387690] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:02:21,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:02:21,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 255 [2021-11-13 18:02:21,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683701210] [2021-11-13 18:02:21,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:02:21,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2021-11-13 18:02:21,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:02:21,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2021-11-13 18:02:21,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16512, Invalid=48768, Unknown=0, NotChecked=0, Total=65280 [2021-11-13 18:02:21,672 INFO L87 Difference]: Start difference. First operand 641 states and 736 transitions. Second operand has 256 states, 255 states have (on average 2.5019607843137255) internal successors, (638), 256 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:02:32,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:02:32,664 INFO L93 Difference]: Finished difference Result 746 states and 809 transitions. [2021-11-13 18:02:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2021-11-13 18:02:32,665 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 255 states have (on average 2.5019607843137255) internal successors, (638), 256 states have internal predecessors, (638), 0 states have call successors, (0), 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 320 [2021-11-13 18:02:32,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:02:32,669 INFO L225 Difference]: With dead ends: 746 [2021-11-13 18:02:32,669 INFO L226 Difference]: Without dead ends: 681 [2021-11-13 18:02:32,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31438 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=40831, Invalid=104711, Unknown=0, NotChecked=0, Total=145542 [2021-11-13 18:02:32,680 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 1950 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 387.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.62ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 498.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:02:32,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 419 Invalid, 724 Unknown, 0 Unchecked, 7.62ms Time], IncrementalHoareTripleChecker [65 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 498.13ms Time] [2021-11-13 18:02:32,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2021-11-13 18:02:32,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 643. [2021-11-13 18:02:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 640 states have (on average 1.0546875) internal successors, (675), 642 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:02:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 675 transitions. [2021-11-13 18:02:32,699 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 675 transitions. Word has length 320 [2021-11-13 18:02:32,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:02:32,700 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 675 transitions. [2021-11-13 18:02:32,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 255 states have (on average 2.5019607843137255) internal successors, (638), 256 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:02:32,701 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 675 transitions. [2021-11-13 18:02:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-11-13 18:02:32,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:02:32,704 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2021-11-13 18:02:32,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-13 18:02:32,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-13 18:02:32,927 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:02:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:02:32,928 INFO L85 PathProgramCache]: Analyzing trace with hash 311166501, now seen corresponding path program 6 times [2021-11-13 18:02:32,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:02:32,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052232298] [2021-11-13 18:02:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:02:32,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:02:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:02:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:02:36,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:02:36,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052232298] [2021-11-13 18:02:36,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052232298] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:02:36,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24829683] [2021-11-13 18:02:36,690 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:02:36,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:02:36,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:02:36,713 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:02:36,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-13 18:02:37,961 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-11-13 18:02:37,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:02:37,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-13 18:02:38,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:02:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:02:39,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:02:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:02:48,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24829683] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:02:48,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:02:48,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-13 18:02:48,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323637488] [2021-11-13 18:02:48,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:02:48,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-13 18:02:48,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:02:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-13 18:02:48,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-11-13 18:02:48,690 INFO L87 Difference]: Start difference. First operand 643 states and 675 transitions. Second operand has 192 states, 191 states have (on average 4.963350785340314) internal successors, (948), 192 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:02:50,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:02:50,369 INFO L93 Difference]: Finished difference Result 1149 states and 1244 transitions. [2021-11-13 18:02:50,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-13 18:02:50,371 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.963350785340314) internal successors, (948), 192 states have internal predecessors, (948), 0 states have call successors, (0), 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 475 [2021-11-13 18:02:50,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:02:50,377 INFO L225 Difference]: With dead ends: 1149 [2021-11-13 18:02:50,377 INFO L226 Difference]: Without dead ends: 1148 [2021-11-13 18:02:50,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-11-13 18:02:50,381 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1057 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 313.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.83ms SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 404.02ms IncrementalHoareTripleChecker+Time [2021-11-13 18:02:50,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 793 Invalid, 496 Unknown, 0 Unchecked, 5.83ms Time], IncrementalHoareTripleChecker [103 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 404.02ms Time] [2021-11-13 18:02:50,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-11-13 18:02:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 959. [2021-11-13 18:02:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 956 states have (on average 1.1349372384937237) internal successors, (1085), 958 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:02:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1085 transitions. [2021-11-13 18:02:50,413 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1085 transitions. Word has length 475 [2021-11-13 18:02:50,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:02:50,415 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1085 transitions. [2021-11-13 18:02:50,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.963350785340314) internal successors, (948), 192 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:02:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1085 transitions. [2021-11-13 18:02:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2021-11-13 18:02:50,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:02:50,422 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 127, 126, 126, 1, 1, 1, 1] [2021-11-13 18:02:50,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:02:50,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-13 18:02:50,637 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:02:50,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:02:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1951658201, now seen corresponding path program 6 times [2021-11-13 18:02:50,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:02:50,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22052961] [2021-11-13 18:02:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:02:50,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:02:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 39879 backedges. 0 proven. 39879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:07,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:07,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22052961] [2021-11-13 18:03:07,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22052961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:03:07,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492078335] [2021-11-13 18:03:07,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:03:07,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:03:07,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:03:07,611 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:03:07,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 18:03:11,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-11-13 18:03:11,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:03:11,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 255 conjunts are in the unsatisfiable core [2021-11-13 18:03:11,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:03:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 39879 backedges. 0 proven. 39879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:12,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:03:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 39879 backedges. 0 proven. 39879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:53,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492078335] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:03:53,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:03:53,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255, 255] total 509 [2021-11-13 18:03:53,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038360180] [2021-11-13 18:03:53,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:03:53,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 510 states [2021-11-13 18:03:53,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:53,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 510 interpolants. [2021-11-13 18:03:53,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65279, Invalid=194311, Unknown=0, NotChecked=0, Total=259590 [2021-11-13 18:03:53,920 INFO L87 Difference]: Start difference. First operand 959 states and 1085 transitions. Second operand has 510 states, 509 states have (on average 2.4990176817288803) internal successors, (1272), 510 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:54,817 INFO L93 Difference]: Finished difference Result 1601 states and 1728 transitions. [2021-11-13 18:04:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2021-11-13 18:04:54,819 INFO L78 Accepts]: Start accepts. Automaton has has 510 states, 509 states have (on average 2.4990176817288803) internal successors, (1272), 510 states have internal predecessors, (1272), 0 states have call successors, (0), 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 637 [2021-11-13 18:04:54,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:54,828 INFO L225 Difference]: With dead ends: 1601 [2021-11-13 18:04:54,828 INFO L226 Difference]: Without dead ends: 1600 [2021-11-13 18:04:54,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1781 GetRequests, 1019 SyntacticMatches, 0 SemanticMatches, 762 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127766 ImplicationChecksByTransitivity, 83.0s TimeCoverageRelationStatistics Valid=162688, Invalid=420244, Unknown=0, NotChecked=0, Total=582932 [2021-11-13 18:04:54,869 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4323 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 866.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.79ms SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1099.65ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:54,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4323 Valid, 751 Invalid, 1554 Unknown, 0 Unchecked, 20.79ms Time], IncrementalHoareTripleChecker [131 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1099.65ms Time] [2021-11-13 18:04:54,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-11-13 18:04:54,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1281. [2021-11-13 18:04:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1278 states have (on average 1.1517996870109546) internal successors, (1472), 1280 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1472 transitions. [2021-11-13 18:04:54,905 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1472 transitions. Word has length 637 [2021-11-13 18:04:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:54,906 INFO L470 AbstractCegarLoop]: Abstraction has 1281 states and 1472 transitions. [2021-11-13 18:04:54,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 510 states, 509 states have (on average 2.4990176817288803) internal successors, (1272), 510 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1472 transitions. [2021-11-13 18:04:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2021-11-13 18:04:54,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:54,913 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 127, 127, 127, 1, 1, 1, 1, 1] [2021-11-13 18:04:54,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:55,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:55,126 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash -877126722, now seen corresponding path program 7 times [2021-11-13 18:04:55,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:55,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105481675] [2021-11-13 18:04:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:55,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:05:11,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:11,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105481675] [2021-11-13 18:05:11,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105481675] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:05:11,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304603145] [2021-11-13 18:05:11,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 18:05:11,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:11,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:05:11,332 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:05:11,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 18:05:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:11,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 256 conjunts are in the unsatisfiable core [2021-11-13 18:05:11,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:05:12,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:05:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:05:53,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304603145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:05:53,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:05:53,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256, 256] total 511 [2021-11-13 18:05:53,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908357699] [2021-11-13 18:05:53,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:05:53,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2021-11-13 18:05:53,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:53,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2021-11-13 18:05:53,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65792, Invalid=195840, Unknown=0, NotChecked=0, Total=261632 [2021-11-13 18:05:53,868 INFO L87 Difference]: Start difference. First operand 1281 states and 1472 transitions. Second operand has 512 states, 511 states have (on average 2.5009784735812133) internal successors, (1278), 512 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:56,545 INFO L93 Difference]: Finished difference Result 1482 states and 1609 transitions. [2021-11-13 18:06:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2021-11-13 18:06:56,546 INFO L78 Accepts]: Start accepts. Automaton has has 512 states, 511 states have (on average 2.5009784735812133) internal successors, (1278), 512 states have internal predecessors, (1278), 0 states have call successors, (0), 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 640 [2021-11-13 18:06:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:56,554 INFO L225 Difference]: With dead ends: 1482 [2021-11-13 18:06:56,554 INFO L226 Difference]: Without dead ends: 1353 [2021-11-13 18:06:56,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1788 GetRequests, 1024 SyntacticMatches, 0 SemanticMatches, 764 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128398 ImplicationChecksByTransitivity, 82.7s TimeCoverageRelationStatistics Valid=163583, Invalid=422407, Unknown=0, NotChecked=0, Total=585990 [2021-11-13 18:06:56,581 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 3871 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 801.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3871 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.94ms SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1008.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:56,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3871 Valid, 785 Invalid, 1439 Unknown, 0 Unchecked, 19.94ms Time], IncrementalHoareTripleChecker [131 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1008.94ms Time] [2021-11-13 18:06:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2021-11-13 18:06:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1283. [2021-11-13 18:06:56,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1280 states have (on average 1.05234375) internal successors, (1347), 1282 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:56,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1347 transitions. [2021-11-13 18:06:56,615 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1347 transitions. Word has length 640 [2021-11-13 18:06:56,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:56,617 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1347 transitions. [2021-11-13 18:06:56,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 512 states, 511 states have (on average 2.5009784735812133) internal successors, (1278), 512 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:56,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1347 transitions. [2021-11-13 18:06:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2021-11-13 18:06:56,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:56,627 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 1, 1, 1, 1] [2021-11-13 18:06:56,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:56,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-13 18:06:56,853 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:06:56,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:56,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1814097445, now seen corresponding path program 7 times [2021-11-13 18:06:56,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:56,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799157037] [2021-11-13 18:06:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:56,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:09,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:09,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799157037] [2021-11-13 18:07:09,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799157037] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:07:09,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271255679] [2021-11-13 18:07:09,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 18:07:09,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:07:09,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:07:09,696 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:07:09,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-13 18:07:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:10,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2125 conjuncts, 193 conjunts are in the unsatisfiable core [2021-11-13 18:07:10,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:11,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:47,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271255679] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:07:47,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:07:47,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-11-13 18:07:47,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658129633] [2021-11-13 18:07:47,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:07:47,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-13 18:07:47,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-13 18:07:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-11-13 18:07:47,564 INFO L87 Difference]: Start difference. First operand 1283 states and 1347 transitions. Second operand has 384 states, 383 states have (on average 4.981723237597911) internal successors, (1908), 384 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:57,803 INFO L93 Difference]: Finished difference Result 2301 states and 2492 transitions. [2021-11-13 18:07:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-13 18:07:57,804 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.981723237597911) internal successors, (1908), 384 states have internal predecessors, (1908), 0 states have call successors, (0), 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 955 [2021-11-13 18:07:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:57,816 INFO L225 Difference]: With dead ends: 2301 [2021-11-13 18:07:57,816 INFO L226 Difference]: Without dead ends: 2300 [2021-11-13 18:07:57,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2100 GetRequests, 1718 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-11-13 18:07:57,825 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 2258 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 534.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.00ms SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 709.10ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:57,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2258 Valid, 1563 Invalid, 976 Unknown, 0 Unchecked, 13.00ms Time], IncrementalHoareTripleChecker [201 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 709.10ms Time] [2021-11-13 18:07:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-11-13 18:07:57,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 1919. [2021-11-13 18:07:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1916 states have (on average 1.134133611691023) internal successors, (2173), 1918 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2173 transitions. [2021-11-13 18:07:57,875 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2173 transitions. Word has length 955 [2021-11-13 18:07:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:57,877 INFO L470 AbstractCegarLoop]: Abstraction has 1919 states and 2173 transitions. [2021-11-13 18:07:57,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.981723237597911) internal successors, (1908), 384 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2173 transitions. [2021-11-13 18:07:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2021-11-13 18:07:57,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:57,893 INFO L514 BasicCegarLoop]: trace histogram [255, 255, 255, 254, 254, 1, 1, 1, 1] [2021-11-13 18:07:57,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:58,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-13 18:07:58,109 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:07:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:58,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1643122905, now seen corresponding path program 7 times [2021-11-13 18:07:58,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:58,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078093511] [2021-11-13 18:07:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:58,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 161671 backedges. 0 proven. 161671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:09:03,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:03,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078093511] [2021-11-13 18:09:03,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078093511] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:09:03,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266818892] [2021-11-13 18:09:03,107 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 18:09:03,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:09:03,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:09:03,108 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:09:03,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09427b6-45cc-4225-9191-cad3b2161920/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-13 18:09:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:03,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 2835 conjuncts, 511 conjunts are in the unsatisfiable core [2021-11-13 18:09:03,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:09:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 161671 backedges. 0 proven. 161671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:09:06,519 INFO L328 TraceCheckSpWp]: Computing backward predicates...