./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0 --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-aef121e [2021-11-22 16:08:03,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:08:03,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:08:04,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:08:04,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:08:04,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:08:04,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:08:04,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:08:04,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:08:04,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:08:04,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:08:04,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:08:04,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:08:04,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:08:04,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:08:04,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:08:04,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:08:04,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:08:04,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:08:04,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:08:04,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:08:04,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:08:04,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:08:04,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:08:04,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:08:04,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:08:04,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:08:04,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:08:04,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:08:04,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:08:04,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:08:04,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:08:04,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:08:04,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:08:04,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:08:04,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:08:04,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:08:04,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:08:04,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:08:04,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:08:04,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:08:04,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-22 16:08:04,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:08:04,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:08:04,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:08:04,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:08:04,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:08:04,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:08:04,135 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:08:04,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:08:04,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:08:04,135 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 16:08:04,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:08:04,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:08:04,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:08:04,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:08:04,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:08:04,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:08:04,138 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-22 16:08:04,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:08:04,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:08:04,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:08:04,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:08:04,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:08:04,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:08:04,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:08:04,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:08:04,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:08:04,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:08:04,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:08:04,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:08:04,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:08:04,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:08:04,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:08:04,143 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_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 [2021-11-22 16:08:04,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:08:04,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:08:04,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:08:04,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:08:04,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:08:04,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2021-11-22 16:08:04,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/data/54b5cfcf6/41789f83c94e4bf1b1f0c0c97a04475b/FLAG60f9d918f [2021-11-22 16:08:04,952 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:08:04,953 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2021-11-22 16:08:04,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/data/54b5cfcf6/41789f83c94e4bf1b1f0c0c97a04475b/FLAG60f9d918f [2021-11-22 16:08:05,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/data/54b5cfcf6/41789f83c94e4bf1b1f0c0c97a04475b [2021-11-22 16:08:05,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:08:05,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:08:05,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:08:05,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:08:05,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:08:05,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585b5280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05, skipping insertion in model container [2021-11-22 16:08:05,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:08:05,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:08:05,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2021-11-22 16:08:05,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:08:05,565 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:08:05,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2021-11-22 16:08:05,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:08:05,596 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:08:05,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05 WrapperNode [2021-11-22 16:08:05,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:08:05,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:08:05,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:08:05,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:08:05,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,634 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2021-11-22 16:08:05,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:08:05,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:08:05,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:08:05,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:08:05,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:08:05,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:08:05,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:08:05,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:08:05,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (1/1) ... [2021-11-22 16:08:05,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:08:05,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:05,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:08:05,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:08:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:08:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:08:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:08:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:08:05,799 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:08:05,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:08:05,938 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:08:05,946 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:08:05,946 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 16:08:05,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:08:05 BoogieIcfgContainer [2021-11-22 16:08:05,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:08:05,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:08:05,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:08:05,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:08:05,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:08:05" (1/3) ... [2021-11-22 16:08:05,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1a2be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:08:05, skipping insertion in model container [2021-11-22 16:08:05,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:05" (2/3) ... [2021-11-22 16:08:05,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1a2be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:08:05, skipping insertion in model container [2021-11-22 16:08:05,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:08:05" (3/3) ... [2021-11-22 16:08:05,960 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark38_conjunctive.i [2021-11-22 16:08:05,966 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:08:05,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-22 16:08:06,038 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:08:06,060 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 [2021-11-22 16:08:06,060 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-22 16:08:06,099 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) [2021-11-22 16:08:06,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-22 16:08:06,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:06,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-22 16:08:06,119 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)] === [2021-11-22 16:08:06,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:06,126 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-11-22 16:08:06,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:06,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916913149] [2021-11-22 16:08:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:06,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:06,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:06,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916913149] [2021-11-22 16:08:06,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916913149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:06,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:06,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:08:06,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638765688] [2021-11-22 16:08:06,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:06,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:08:06,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:06,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:08:06,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:06,367 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) [2021-11-22 16:08:06,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:06,417 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-11-22 16:08:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:08:06,423 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 [2021-11-22 16:08:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:06,434 INFO L225 Difference]: With dead ends: 43 [2021-11-22 16:08:06,436 INFO L226 Difference]: Without dead ends: 23 [2021-11-22 16:08:06,441 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 [2021-11-22 16:08:06,456 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:06,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:06,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-22 16:08:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-11-22 16:08:06,514 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) [2021-11-22 16:08:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-11-22 16:08:06,518 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-11-22 16:08:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:06,519 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-11-22 16:08:06,519 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) [2021-11-22 16:08:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-22 16:08:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-22 16:08:06,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:06,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-22 16:08:06,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:08:06,522 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)] === [2021-11-22 16:08:06,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:06,528 INFO L85 PathProgramCache]: Analyzing trace with hash 28695922, now seen corresponding path program 1 times [2021-11-22 16:08:06,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:06,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215271265] [2021-11-22 16:08:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:06,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:06,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:06,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215271265] [2021-11-22 16:08:06,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215271265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:06,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:06,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:08:06,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651129516] [2021-11-22 16:08:06,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:06,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:08:06,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:06,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:08:06,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:06,620 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) [2021-11-22 16:08:06,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:06,668 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-22 16:08:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:08:06,670 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 [2021-11-22 16:08:06,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:06,673 INFO L225 Difference]: With dead ends: 27 [2021-11-22 16:08:06,673 INFO L226 Difference]: Without dead ends: 26 [2021-11-22 16:08:06,674 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 [2021-11-22 16:08:06,677 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:06,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:06,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-22 16:08:06,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-11-22 16:08:06,693 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) [2021-11-22 16:08:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-22 16:08:06,695 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2021-11-22 16:08:06,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:06,696 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-22 16:08:06,697 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) [2021-11-22 16:08:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-22 16:08:06,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:08:06,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:06,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:08:06,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:08:06,701 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)] === [2021-11-22 16:08:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-11-22 16:08:06,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:06,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843882926] [2021-11-22 16:08:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:06,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:06,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:06,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843882926] [2021-11-22 16:08:06,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843882926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:06,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:06,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:08:06,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533499052] [2021-11-22 16:08:06,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:06,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:08:06,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:06,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:08:06,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:06,775 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) [2021-11-22 16:08:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:06,797 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-22 16:08:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:08:06,821 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 [2021-11-22 16:08:06,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:06,822 INFO L225 Difference]: With dead ends: 19 [2021-11-22 16:08:06,822 INFO L226 Difference]: Without dead ends: 18 [2021-11-22 16:08:06,823 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 [2021-11-22 16:08:06,824 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:06,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-22 16:08:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-22 16:08:06,830 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) [2021-11-22 16:08:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-11-22 16:08:06,835 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2021-11-22 16:08:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:06,836 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-11-22 16:08:06,836 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) [2021-11-22 16:08:06,837 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-22 16:08:06,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:08:06,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:06,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:08:06,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:08:06,839 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)] === [2021-11-22 16:08:06,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash 889573643, now seen corresponding path program 1 times [2021-11-22 16:08:06,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:06,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462890617] [2021-11-22 16:08:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:06,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:06,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:06,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462890617] [2021-11-22 16:08:06,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462890617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:06,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:06,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:08:06,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948651619] [2021-11-22 16:08:06,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:06,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:08:06,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:06,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:08:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:08:06,910 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) [2021-11-22 16:08:06,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:06,939 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-11-22 16:08:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:08:06,941 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 [2021-11-22 16:08:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:06,944 INFO L225 Difference]: With dead ends: 25 [2021-11-22 16:08:06,945 INFO L226 Difference]: Without dead ends: 22 [2021-11-22 16:08:06,945 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 [2021-11-22 16:08:06,954 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:06,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-22 16:08:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2021-11-22 16:08:06,969 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) [2021-11-22 16:08:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-22 16:08:06,972 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2021-11-22 16:08:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:06,972 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-22 16:08:06,973 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) [2021-11-22 16:08:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-22 16:08:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 16:08:06,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:06,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:06,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:08:06,976 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)] === [2021-11-22 16:08:06,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:06,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-11-22 16:08:06,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:06,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683008604] [2021-11-22 16:08:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:06,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:07,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:07,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683008604] [2021-11-22 16:08:07,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683008604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:07,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:07,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:07,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022234492] [2021-11-22 16:08:07,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:07,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:07,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:07,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:07,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:07,051 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) [2021-11-22 16:08:07,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:07,108 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-11-22 16:08:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:08:07,109 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 [2021-11-22 16:08:07,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:07,110 INFO L225 Difference]: With dead ends: 22 [2021-11-22 16:08:07,111 INFO L226 Difference]: Without dead ends: 21 [2021-11-22 16:08:07,111 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 [2021-11-22 16:08:07,116 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:07,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:07,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-22 16:08:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-22 16:08:07,124 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) [2021-11-22 16:08:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-22 16:08:07,125 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 7 [2021-11-22 16:08:07,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:07,126 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-22 16:08:07,126 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) [2021-11-22 16:08:07,127 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-22 16:08:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 16:08:07,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:07,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:07,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:08:07,134 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)] === [2021-11-22 16:08:07,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-11-22 16:08:07,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:07,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685292999] [2021-11-22 16:08:07,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:07,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:07,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685292999] [2021-11-22 16:08:07,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685292999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:08:07,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:08:07,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:08:07,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670646990] [2021-11-22 16:08:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:08:07,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:08:07,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:07,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:08:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:08:07,223 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) [2021-11-22 16:08:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:07,259 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-22 16:08:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:08:07,260 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 [2021-11-22 16:08:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:07,263 INFO L225 Difference]: With dead ends: 19 [2021-11-22 16:08:07,265 INFO L226 Difference]: Without dead ends: 16 [2021-11-22 16:08:07,265 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 [2021-11-22 16:08:07,267 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:07,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-22 16:08:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-22 16:08:07,275 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) [2021-11-22 16:08:07,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-22 16:08:07,280 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2021-11-22 16:08:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:07,280 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-22 16:08:07,280 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) [2021-11-22 16:08:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-22 16:08:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 16:08:07,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:07,282 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:07,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 16:08:07,284 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)] === [2021-11-22 16:08:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-11-22 16:08:07,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:07,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228052505] [2021-11-22 16:08:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:07,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:07,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228052505] [2021-11-22 16:08:07,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228052505] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861235840] [2021-11-22 16:08:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:07,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:07,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:07,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:07,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 16:08:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:07,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 16:08:07,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:07,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:07,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861235840] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:07,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:07,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-22 16:08:07,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900441247] [2021-11-22 16:08:07,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:07,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:08:07,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:08:07,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:08:07,585 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) [2021-11-22 16:08:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:07,633 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-11-22 16:08:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:08:07,634 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 [2021-11-22 16:08:07,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:07,635 INFO L225 Difference]: With dead ends: 38 [2021-11-22 16:08:07,636 INFO L226 Difference]: Without dead ends: 37 [2021-11-22 16:08:07,638 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 [2021-11-22 16:08:07,639 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:07,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 36 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:07,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-22 16:08:07,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2021-11-22 16:08:07,649 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) [2021-11-22 16:08:07,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-22 16:08:07,651 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 10 [2021-11-22 16:08:07,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:07,652 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-22 16:08:07,652 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) [2021-11-22 16:08:07,652 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-22 16:08:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 16:08:07,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:07,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:08:07,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:07,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:07,879 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)] === [2021-11-22 16:08:07,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:07,879 INFO L85 PathProgramCache]: Analyzing trace with hash 47508542, now seen corresponding path program 1 times [2021-11-22 16:08:07,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:07,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323559323] [2021-11-22 16:08:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:07,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:07,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:07,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323559323] [2021-11-22 16:08:07,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323559323] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:07,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50441100] [2021-11-22 16:08:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:07,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:07,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:07,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:07,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 16:08:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:08,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 16:08:08,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:08,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:08,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50441100] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:08,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:08,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 16:08:08,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488400045] [2021-11-22 16:08:08,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:08,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:08:08,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:08:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:08:08,157 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) [2021-11-22 16:08:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:08,229 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-11-22 16:08:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:08:08,230 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 [2021-11-22 16:08:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:08,231 INFO L225 Difference]: With dead ends: 34 [2021-11-22 16:08:08,231 INFO L226 Difference]: Without dead ends: 30 [2021-11-22 16:08:08,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:08:08,232 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:08,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:08,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-22 16:08:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-22 16:08:08,243 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) [2021-11-22 16:08:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-11-22 16:08:08,244 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 10 [2021-11-22 16:08:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:08,244 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-11-22 16:08:08,245 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) [2021-11-22 16:08:08,245 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-11-22 16:08:08,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 16:08:08,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:08,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-11-22 16:08:08,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:08,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:08,474 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)] === [2021-11-22 16:08:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash 120622631, now seen corresponding path program 1 times [2021-11-22 16:08:08,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:08,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052552697] [2021-11-22 16:08:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:08,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:08,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:08,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052552697] [2021-11-22 16:08:08,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052552697] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:08,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921346731] [2021-11-22 16:08:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:08,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:08,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:08,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:08,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 16:08:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:08,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 16:08:08,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:08,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:08,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921346731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:08,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:08,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-22 16:08:08,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470256590] [2021-11-22 16:08:08,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:08,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 16:08:08,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:08,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 16:08:08,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-22 16:08:08,797 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) [2021-11-22 16:08:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:08,927 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-11-22 16:08:08,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 16:08:08,928 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 [2021-11-22 16:08:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:08,929 INFO L225 Difference]: With dead ends: 51 [2021-11-22 16:08:08,929 INFO L226 Difference]: Without dead ends: 50 [2021-11-22 16:08:08,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-22 16:08:08,931 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 34 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:08,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 55 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-22 16:08:08,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-11-22 16:08:08,938 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) [2021-11-22 16:08:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-11-22 16:08:08,939 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 17 [2021-11-22 16:08:08,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:08,940 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-11-22 16:08:08,940 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) [2021-11-22 16:08:08,940 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-11-22 16:08:08,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 16:08:08,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:08,941 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-11-22 16:08:08,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:09,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-22 16:08:09,155 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)] === [2021-11-22 16:08:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1418773314, now seen corresponding path program 2 times [2021-11-22 16:08:09,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:09,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614116208] [2021-11-22 16:08:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:09,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:09,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:09,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614116208] [2021-11-22 16:08:09,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614116208] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:09,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639870965] [2021-11-22 16:08:09,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 16:08:09,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:09,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:09,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:09,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 16:08:09,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 16:08:09,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:09,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 16:08:09,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:09,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:09,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639870965] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:09,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:09,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-22 16:08:09,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196083896] [2021-11-22 16:08:09,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:09,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 16:08:09,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:09,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 16:08:09,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-22 16:08:09,496 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) [2021-11-22 16:08:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:09,630 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-11-22 16:08:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 16:08:09,631 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 [2021-11-22 16:08:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:09,632 INFO L225 Difference]: With dead ends: 56 [2021-11-22 16:08:09,632 INFO L226 Difference]: Without dead ends: 51 [2021-11-22 16:08:09,633 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 [2021-11-22 16:08:09,634 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 64 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:09,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 65 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:09,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-22 16:08:09,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2021-11-22 16:08:09,660 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) [2021-11-22 16:08:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-11-22 16:08:09,661 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 20 [2021-11-22 16:08:09,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:09,662 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-11-22 16:08:09,662 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) [2021-11-22 16:08:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-11-22 16:08:09,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 16:08:09,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:09,663 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-11-22 16:08:09,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:09,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 16:08:09,864 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)] === [2021-11-22 16:08:09,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 2 times [2021-11-22 16:08:09,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:09,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763920159] [2021-11-22 16:08:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:09,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:09,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:09,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763920159] [2021-11-22 16:08:09,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763920159] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:09,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104783328] [2021-11-22 16:08:09,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 16:08:09,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:09,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:09,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:09,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 16:08:10,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 16:08:10,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:10,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 16:08:10,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:10,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:10,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104783328] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:10,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:10,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-22 16:08:10,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137703787] [2021-11-22 16:08:10,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:10,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 16:08:10,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 16:08:10,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-22 16:08:10,263 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) [2021-11-22 16:08:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:10,319 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-11-22 16:08:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 16:08:10,320 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 [2021-11-22 16:08:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:10,321 INFO L225 Difference]: With dead ends: 69 [2021-11-22 16:08:10,321 INFO L226 Difference]: Without dead ends: 68 [2021-11-22 16:08:10,321 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 [2021-11-22 16:08:10,322 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:10,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 61 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:08:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-22 16:08:10,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2021-11-22 16:08:10,328 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) [2021-11-22 16:08:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2021-11-22 16:08:10,329 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 25 [2021-11-22 16:08:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:10,330 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2021-11-22 16:08:10,330 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) [2021-11-22 16:08:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2021-11-22 16:08:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 16:08:10,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:10,336 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2021-11-22 16:08:10,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:10,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:10,546 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)] === [2021-11-22 16:08:10,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:10,547 INFO L85 PathProgramCache]: Analyzing trace with hash -365728473, now seen corresponding path program 2 times [2021-11-22 16:08:10,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:10,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070669650] [2021-11-22 16:08:10,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:10,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:10,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:10,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070669650] [2021-11-22 16:08:10,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070669650] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:10,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727056155] [2021-11-22 16:08:10,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 16:08:10,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:10,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:10,753 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:10,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 16:08:10,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 16:08:10,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:10,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 16:08:10,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:10,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:11,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727056155] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:11,289 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:11,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2021-11-22 16:08:11,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990323142] [2021-11-22 16:08:11,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:11,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-22 16:08:11,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-22 16:08:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-11-22 16:08:11,293 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) [2021-11-22 16:08:11,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:11,661 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2021-11-22 16:08:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-22 16:08:11,662 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 [2021-11-22 16:08:11,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:11,663 INFO L225 Difference]: With dead ends: 101 [2021-11-22 16:08:11,664 INFO L226 Difference]: Without dead ends: 100 [2021-11-22 16:08:11,665 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 [2021-11-22 16:08:11,666 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 96 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:11,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 86 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-22 16:08:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2021-11-22 16:08:11,675 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) [2021-11-22 16:08:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2021-11-22 16:08:11,677 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 37 [2021-11-22 16:08:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:11,677 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2021-11-22 16:08:11,678 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) [2021-11-22 16:08:11,678 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2021-11-22 16:08:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-22 16:08:11,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:11,680 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2021-11-22 16:08:11,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-22 16:08:11,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-22 16:08:11,907 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)] === [2021-11-22 16:08:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash 915144126, now seen corresponding path program 3 times [2021-11-22 16:08:11,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:11,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572441650] [2021-11-22 16:08:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:11,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:12,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:12,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572441650] [2021-11-22 16:08:12,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572441650] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276118120] [2021-11-22 16:08:12,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 16:08:12,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:12,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:12,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:12,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 16:08:12,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-22 16:08:12,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:12,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-22 16:08:12,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:12,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:12,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276118120] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:12,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:12,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2021-11-22 16:08:12,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233971713] [2021-11-22 16:08:12,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:12,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-22 16:08:12,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:12,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-22 16:08:12,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2021-11-22 16:08:12,792 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) [2021-11-22 16:08:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:13,168 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2021-11-22 16:08:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-22 16:08:13,169 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 [2021-11-22 16:08:13,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:13,170 INFO L225 Difference]: With dead ends: 102 [2021-11-22 16:08:13,170 INFO L226 Difference]: Without dead ends: 93 [2021-11-22 16:08:13,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=623, Invalid=1447, Unknown=0, NotChecked=0, Total=2070 [2021-11-22 16:08:13,173 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 103 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:13,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 117 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-22 16:08:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2021-11-22 16:08:13,189 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) [2021-11-22 16:08:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2021-11-22 16:08:13,194 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 40 [2021-11-22 16:08:13,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:13,195 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2021-11-22 16:08:13,195 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) [2021-11-22 16:08:13,196 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2021-11-22 16:08:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 16:08:13,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:13,202 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-11-22 16:08:13,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:13,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:13,427 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)] === [2021-11-22 16:08:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:13,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 3 times [2021-11-22 16:08:13,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:13,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578947510] [2021-11-22 16:08:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:13,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:13,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:13,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578947510] [2021-11-22 16:08:13,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578947510] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:13,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389115057] [2021-11-22 16:08:13,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 16:08:13,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:13,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:13,599 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:13,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 16:08:13,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-22 16:08:13,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:13,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 16:08:13,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:13,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:14,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389115057] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:14,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:14,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-22 16:08:14,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258405379] [2021-11-22 16:08:14,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:14,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-22 16:08:14,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:14,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-22 16:08:14,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-22 16:08:14,212 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) [2021-11-22 16:08:14,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:14,331 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2021-11-22 16:08:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 16:08:14,331 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 [2021-11-22 16:08:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:14,333 INFO L225 Difference]: With dead ends: 141 [2021-11-22 16:08:14,333 INFO L226 Difference]: Without dead ends: 140 [2021-11-22 16:08:14,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-22 16:08:14,335 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 80 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:14,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 111 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:14,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-22 16:08:14,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 119. [2021-11-22 16:08:14,345 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) [2021-11-22 16:08:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2021-11-22 16:08:14,347 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 55 [2021-11-22 16:08:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:14,347 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2021-11-22 16:08:14,348 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) [2021-11-22 16:08:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2021-11-22 16:08:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 16:08:14,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:14,350 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1] [2021-11-22 16:08:14,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:14,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-22 16:08:14,579 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)] === [2021-11-22 16:08:14,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash 881371943, now seen corresponding path program 3 times [2021-11-22 16:08:14,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:14,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147017988] [2021-11-22 16:08:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:14,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:15,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:15,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147017988] [2021-11-22 16:08:15,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147017988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:15,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47032537] [2021-11-22 16:08:15,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 16:08:15,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:15,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:15,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:15,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 16:08:15,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-22 16:08:15,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:15,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-22 16:08:15,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:15,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:16,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47032537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:16,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:16,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2021-11-22 16:08:16,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689545121] [2021-11-22 16:08:16,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:16,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-22 16:08:16,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:16,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-22 16:08:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2021-11-22 16:08:16,803 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) [2021-11-22 16:08:17,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:17,759 INFO L93 Difference]: Finished difference Result 201 states and 216 transitions. [2021-11-22 16:08:17,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-22 16:08:17,760 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 [2021-11-22 16:08:17,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:17,762 INFO L225 Difference]: With dead ends: 201 [2021-11-22 16:08:17,762 INFO L226 Difference]: Without dead ends: 200 [2021-11-22 16:08:17,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2021-11-22 16:08:17,767 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 326 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:17,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 127 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:08:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-22 16:08:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 161. [2021-11-22 16:08:17,778 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) [2021-11-22 16:08:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 184 transitions. [2021-11-22 16:08:17,780 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 184 transitions. Word has length 77 [2021-11-22 16:08:17,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:17,781 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 184 transitions. [2021-11-22 16:08:17,782 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) [2021-11-22 16:08:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 184 transitions. [2021-11-22 16:08:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 16:08:17,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:17,790 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2021-11-22 16:08:17,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:18,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:18,005 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)] === [2021-11-22 16:08:18,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:18,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1816526782, now seen corresponding path program 4 times [2021-11-22 16:08:18,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:18,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308439533] [2021-11-22 16:08:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:18,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:18,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:18,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308439533] [2021-11-22 16:08:18,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308439533] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:18,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796018329] [2021-11-22 16:08:18,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 16:08:18,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:18,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:18,587 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:18,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 16:08:18,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 16:08:18,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:18,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-22 16:08:18,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:18,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:20,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796018329] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:20,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:20,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2021-11-22 16:08:20,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371758166] [2021-11-22 16:08:20,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:20,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-22 16:08:20,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-22 16:08:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2021-11-22 16:08:20,164 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) [2021-11-22 16:08:21,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:21,234 INFO L93 Difference]: Finished difference Result 194 states and 209 transitions. [2021-11-22 16:08:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-22 16:08:21,235 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 [2021-11-22 16:08:21,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:21,237 INFO L225 Difference]: With dead ends: 194 [2021-11-22 16:08:21,237 INFO L226 Difference]: Without dead ends: 177 [2021-11-22 16:08:21,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2527, Invalid=6215, Unknown=0, NotChecked=0, Total=8742 [2021-11-22 16:08:21,242 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 438 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:21,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 145 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:08:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-22 16:08:21,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 163. [2021-11-22 16:08:21,251 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) [2021-11-22 16:08:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2021-11-22 16:08:21,253 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 80 [2021-11-22 16:08:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:21,253 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2021-11-22 16:08:21,254 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) [2021-11-22 16:08:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2021-11-22 16:08:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 16:08:21,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:21,256 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-11-22 16:08:21,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:21,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-22 16:08:21,483 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)] === [2021-11-22 16:08:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:21,483 INFO L85 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 4 times [2021-11-22 16:08:21,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:21,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673121467] [2021-11-22 16:08:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:21,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:21,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:21,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673121467] [2021-11-22 16:08:21,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673121467] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:21,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464569477] [2021-11-22 16:08:21,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 16:08:21,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:21,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:21,891 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:21,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 16:08:21,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 16:08:21,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:21,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-22 16:08:21,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:22,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:23,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464569477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:23,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:23,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-22 16:08:23,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317812644] [2021-11-22 16:08:23,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:23,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-22 16:08:23,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:23,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-22 16:08:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-11-22 16:08:23,426 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) [2021-11-22 16:08:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:23,624 INFO L93 Difference]: Finished difference Result 285 states and 308 transitions. [2021-11-22 16:08:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-22 16:08:23,624 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 [2021-11-22 16:08:23,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:23,626 INFO L225 Difference]: With dead ends: 285 [2021-11-22 16:08:23,626 INFO L226 Difference]: Without dead ends: 284 [2021-11-22 16:08:23,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-11-22 16:08:23,629 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 229 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:23,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 209 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:08:23,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-22 16:08:23,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 239. [2021-11-22 16:08:23,641 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) [2021-11-22 16:08:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2021-11-22 16:08:23,643 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 115 [2021-11-22 16:08:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:23,643 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2021-11-22 16:08:23,644 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) [2021-11-22 16:08:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2021-11-22 16:08:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-22 16:08:23,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:23,646 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1] [2021-11-22 16:08:23,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:23,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-22 16:08:23,859 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)] === [2021-11-22 16:08:23,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash -881776857, now seen corresponding path program 4 times [2021-11-22 16:08:23,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:23,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556750579] [2021-11-22 16:08:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:23,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:25,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:25,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556750579] [2021-11-22 16:08:25,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556750579] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:25,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649899474] [2021-11-22 16:08:25,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 16:08:25,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:25,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:25,243 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:25,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 16:08:25,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 16:08:25,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:25,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-22 16:08:25,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:25,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:29,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649899474] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:29,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:29,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 125 [2021-11-22 16:08:29,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450894333] [2021-11-22 16:08:29,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:29,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-11-22 16:08:29,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:29,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-11-22 16:08:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2021-11-22 16:08:29,220 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) [2021-11-22 16:08:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:32,404 INFO L93 Difference]: Finished difference Result 401 states and 432 transitions. [2021-11-22 16:08:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-22 16:08:32,405 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 [2021-11-22 16:08:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:32,410 INFO L225 Difference]: With dead ends: 401 [2021-11-22 16:08:32,410 INFO L226 Difference]: Without dead ends: 400 [2021-11-22 16:08:32,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7382 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=9952, Invalid=25204, Unknown=0, NotChecked=0, Total=35156 [2021-11-22 16:08:32,421 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 720 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:32,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 205 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 16:08:32,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-11-22 16:08:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 321. [2021-11-22 16:08:32,437 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) [2021-11-22 16:08:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 368 transitions. [2021-11-22 16:08:32,440 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 368 transitions. Word has length 157 [2021-11-22 16:08:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:32,441 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 368 transitions. [2021-11-22 16:08:32,441 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) [2021-11-22 16:08:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 368 transitions. [2021-11-22 16:08:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-22 16:08:32,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:32,448 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2021-11-22 16:08:32,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:32,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 16:08:32,663 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)] === [2021-11-22 16:08:32,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:32,663 INFO L85 PathProgramCache]: Analyzing trace with hash -994311234, now seen corresponding path program 5 times [2021-11-22 16:08:32,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:32,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112742811] [2021-11-22 16:08:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:32,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:34,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:34,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112742811] [2021-11-22 16:08:34,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112742811] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:34,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825332675] [2021-11-22 16:08:34,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 16:08:34,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:34,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:34,422 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:34,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 16:08:34,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-11-22 16:08:34,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:34,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-22 16:08:34,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:35,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:38,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825332675] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:38,295 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:38,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2021-11-22 16:08:38,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064481605] [2021-11-22 16:08:38,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:38,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-22 16:08:38,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-22 16:08:38,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2021-11-22 16:08:38,302 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) [2021-11-22 16:08:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:41,382 INFO L93 Difference]: Finished difference Result 378 states and 409 transitions. [2021-11-22 16:08:41,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-22 16:08:41,383 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 [2021-11-22 16:08:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:41,385 INFO L225 Difference]: With dead ends: 378 [2021-11-22 16:08:41,386 INFO L226 Difference]: Without dead ends: 345 [2021-11-22 16:08:41,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7534 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=10175, Invalid=25735, Unknown=0, NotChecked=0, Total=35910 [2021-11-22 16:08:41,392 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 779 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:41,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 244 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 16:08:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-22 16:08:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2021-11-22 16:08:41,406 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) [2021-11-22 16:08:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 339 transitions. [2021-11-22 16:08:41,408 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 339 transitions. Word has length 160 [2021-11-22 16:08:41,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:41,408 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 339 transitions. [2021-11-22 16:08:41,409 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) [2021-11-22 16:08:41,409 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 339 transitions. [2021-11-22 16:08:41,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-22 16:08:41,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:41,413 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-11-22 16:08:41,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 16:08:41,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:41,627 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)] === [2021-11-22 16:08:41,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:41,627 INFO L85 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 5 times [2021-11-22 16:08:41,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:41,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87002066] [2021-11-22 16:08:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:41,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:43,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87002066] [2021-11-22 16:08:43,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87002066] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280150827] [2021-11-22 16:08:43,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 16:08:43,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:43,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:43,114 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:43,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 16:08:43,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-11-22 16:08:43,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:43,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-22 16:08:43,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:44,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:08:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:47,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280150827] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:08:47,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:08:47,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-22 16:08:47,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956674572] [2021-11-22 16:08:47,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:08:47,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-22 16:08:47,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:08:47,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-22 16:08:47,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-11-22 16:08:47,227 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) [2021-11-22 16:08:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:08:47,725 INFO L93 Difference]: Finished difference Result 573 states and 620 transitions. [2021-11-22 16:08:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-22 16:08:47,726 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 [2021-11-22 16:08:47,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:08:47,730 INFO L225 Difference]: With dead ends: 573 [2021-11-22 16:08:47,730 INFO L226 Difference]: Without dead ends: 572 [2021-11-22 16:08:47,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-11-22 16:08:47,733 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 449 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:08:47,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 402 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:08:47,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-11-22 16:08:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 479. [2021-11-22 16:08:47,751 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) [2021-11-22 16:08:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 541 transitions. [2021-11-22 16:08:47,754 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 541 transitions. Word has length 235 [2021-11-22 16:08:47,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:08:47,755 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 541 transitions. [2021-11-22 16:08:47,756 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) [2021-11-22 16:08:47,756 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 541 transitions. [2021-11-22 16:08:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-22 16:08:47,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:08:47,762 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 1, 1, 1, 1] [2021-11-22 16:08:47,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-22 16:08:47,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:47,979 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)] === [2021-11-22 16:08:47,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:08:47,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1975902425, now seen corresponding path program 5 times [2021-11-22 16:08:47,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:08:47,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203841294] [2021-11-22 16:08:47,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:08:47,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:08:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:08:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:53,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:08:53,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203841294] [2021-11-22 16:08:53,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203841294] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:08:53,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25096743] [2021-11-22 16:08:53,054 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 16:08:53,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:08:53,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:08:53,054 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:08:53,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 16:08:53,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2021-11-22 16:08:53,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:08:53,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-22 16:08:53,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:08:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:08:54,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:09:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:09:06,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25096743] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:09:06,712 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:09:06,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127, 127] total 253 [2021-11-22 16:09:06,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791878057] [2021-11-22 16:09:06,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:09:06,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 254 states [2021-11-22 16:09:06,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:09:06,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2021-11-22 16:09:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16255, Invalid=48007, Unknown=0, NotChecked=0, Total=64262 [2021-11-22 16:09:06,725 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) [2021-11-22 16:09:18,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:09:18,647 INFO L93 Difference]: Finished difference Result 801 states and 864 transitions. [2021-11-22 16:09:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2021-11-22 16:09:18,648 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 [2021-11-22 16:09:18,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:09:18,654 INFO L225 Difference]: With dead ends: 801 [2021-11-22 16:09:18,655 INFO L226 Difference]: Without dead ends: 800 [2021-11-22 16:09:18,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31126 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=40384, Invalid=103636, Unknown=0, NotChecked=0, Total=144020 [2021-11-22 16:09:18,670 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1681 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 16:09:18,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 413 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 16:09:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-11-22 16:09:18,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 641. [2021-11-22 16:09:18,693 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) [2021-11-22 16:09:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 736 transitions. [2021-11-22 16:09:18,696 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 736 transitions. Word has length 317 [2021-11-22 16:09:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:09:18,697 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 736 transitions. [2021-11-22 16:09:18,698 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) [2021-11-22 16:09:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 736 transitions. [2021-11-22 16:09:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-22 16:09:18,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:09:18,705 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2021-11-22 16:09:18,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 16:09:18,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:09:18,919 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)] === [2021-11-22 16:09:18,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:09:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1582298178, now seen corresponding path program 6 times [2021-11-22 16:09:18,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:09:18,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739036350] [2021-11-22 16:09:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:09:18,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:09:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:09:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:09:24,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:09:24,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739036350] [2021-11-22 16:09:24,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739036350] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:09:24,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658754156] [2021-11-22 16:09:24,300 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-22 16:09:24,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:09:24,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:09:24,301 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:09:24,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 16:09:24,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2021-11-22 16:09:24,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:09:24,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 128 conjunts are in the unsatisfiable core [2021-11-22 16:09:24,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:09:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:09:25,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:09:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:09:37,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658754156] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:09:37,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:09:37,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 255 [2021-11-22 16:09:37,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739851339] [2021-11-22 16:09:37,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:09:37,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2021-11-22 16:09:37,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:09:37,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2021-11-22 16:09:37,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16512, Invalid=48768, Unknown=0, NotChecked=0, Total=65280 [2021-11-22 16:09:37,880 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) [2021-11-22 16:09:49,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:09:49,256 INFO L93 Difference]: Finished difference Result 746 states and 809 transitions. [2021-11-22 16:09:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2021-11-22 16:09:49,259 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 [2021-11-22 16:09:49,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:09:49,263 INFO L225 Difference]: With dead ends: 746 [2021-11-22 16:09:49,264 INFO L226 Difference]: Without dead ends: 681 [2021-11-22 16:09:49,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31438 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=40831, Invalid=104711, Unknown=0, NotChecked=0, Total=145542 [2021-11-22 16:09:49,273 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 1950 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 16:09:49,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 419 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 16:09:49,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2021-11-22 16:09:49,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 643. [2021-11-22 16:09:49,293 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) [2021-11-22 16:09:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 675 transitions. [2021-11-22 16:09:49,296 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 675 transitions. Word has length 320 [2021-11-22 16:09:49,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:09:49,297 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 675 transitions. [2021-11-22 16:09:49,298 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) [2021-11-22 16:09:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 675 transitions. [2021-11-22 16:09:49,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-11-22 16:09:49,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:09:49,309 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2021-11-22 16:09:49,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-22 16:09:49,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-22 16:09:49,528 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)] === [2021-11-22 16:09:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:09:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash 311166501, now seen corresponding path program 6 times [2021-11-22 16:09:49,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:09:49,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975588949] [2021-11-22 16:09:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:09:49,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:09:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:09:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:09:53,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:09:53,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975588949] [2021-11-22 16:09:53,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975588949] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:09:53,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291146582] [2021-11-22 16:09:53,531 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-22 16:09:53,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:09:53,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:09:53,549 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:09:53,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 16:09:54,615 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-11-22 16:09:54,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:09:54,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-22 16:09:54,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:09:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:09:55,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:10:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:10:05,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291146582] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:10:05,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:10:05,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-22 16:10:05,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747598872] [2021-11-22 16:10:05,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:10:05,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-22 16:10:05,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:10:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-22 16:10:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-11-22 16:10:05,970 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) [2021-11-22 16:10:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:10:07,970 INFO L93 Difference]: Finished difference Result 1149 states and 1244 transitions. [2021-11-22 16:10:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-22 16:10:07,971 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 [2021-11-22 16:10:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:10:07,977 INFO L225 Difference]: With dead ends: 1149 [2021-11-22 16:10:07,977 INFO L226 Difference]: Without dead ends: 1148 [2021-11-22 16:10:07,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-11-22 16:10:07,980 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1057 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 16:10:07,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 793 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 16:10:07,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-11-22 16:10:08,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 959. [2021-11-22 16:10:08,012 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) [2021-11-22 16:10:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1085 transitions. [2021-11-22 16:10:08,016 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1085 transitions. Word has length 475 [2021-11-22 16:10:08,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:10:08,017 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1085 transitions. [2021-11-22 16:10:08,018 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) [2021-11-22 16:10:08,019 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1085 transitions. [2021-11-22 16:10:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2021-11-22 16:10:08,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:10:08,025 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 127, 126, 126, 1, 1, 1, 1] [2021-11-22 16:10:08,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-22 16:10:08,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:10:08,239 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)] === [2021-11-22 16:10:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:10:08,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1951658201, now seen corresponding path program 6 times [2021-11-22 16:10:08,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:10:08,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549509900] [2021-11-22 16:10:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:10:08,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:10:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:10:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 39879 backedges. 0 proven. 39879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:10:27,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:10:27,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549509900] [2021-11-22 16:10:27,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549509900] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:10:27,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239982313] [2021-11-22 16:10:27,177 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-22 16:10:27,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:10:27,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:10:27,178 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:10:27,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-22 16:10:30,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-11-22 16:10:30,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:10:30,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 255 conjunts are in the unsatisfiable core [2021-11-22 16:10:30,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:10:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 39879 backedges. 0 proven. 39879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:10:32,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:11:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 39879 backedges. 0 proven. 39879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:11:17,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239982313] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:11:17,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:11:17,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255, 255] total 509 [2021-11-22 16:11:17,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870141360] [2021-11-22 16:11:17,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:11:17,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 510 states [2021-11-22 16:11:17,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:11:17,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 510 interpolants. [2021-11-22 16:11:17,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65279, Invalid=194311, Unknown=0, NotChecked=0, Total=259590 [2021-11-22 16:11:17,839 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) [2021-11-22 16:12:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:12:28,134 INFO L93 Difference]: Finished difference Result 1601 states and 1728 transitions. [2021-11-22 16:12:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2021-11-22 16:12:28,136 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 [2021-11-22 16:12:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:12:28,145 INFO L225 Difference]: With dead ends: 1601 [2021-11-22 16:12:28,145 INFO L226 Difference]: Without dead ends: 1600 [2021-11-22 16:12:28,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1781 GetRequests, 1019 SyntacticMatches, 0 SemanticMatches, 762 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127766 ImplicationChecksByTransitivity, 94.9s TimeCoverageRelationStatistics Valid=162688, Invalid=420244, Unknown=0, NotChecked=0, Total=582932 [2021-11-22 16:12:28,312 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4323 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:12:28,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4323 Valid, 751 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-22 16:12:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-11-22 16:12:28,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1281. [2021-11-22 16:12:28,355 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) [2021-11-22 16:12:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1472 transitions. [2021-11-22 16:12:28,360 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1472 transitions. Word has length 637 [2021-11-22 16:12:28,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:12:28,361 INFO L470 AbstractCegarLoop]: Abstraction has 1281 states and 1472 transitions. [2021-11-22 16:12:28,363 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) [2021-11-22 16:12:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1472 transitions. [2021-11-22 16:12:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2021-11-22 16:12:28,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:12:28,369 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 127, 127, 127, 1, 1, 1, 1, 1] [2021-11-22 16:12:28,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-22 16:12:28,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-22 16:12:28,583 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)] === [2021-11-22 16:12:28,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:12:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash -877126722, now seen corresponding path program 7 times [2021-11-22 16:12:28,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:12:28,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483503459] [2021-11-22 16:12:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:12:28,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:12:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:12:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:12:48,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:12:48,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483503459] [2021-11-22 16:12:48,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483503459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:12:48,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161231201] [2021-11-22 16:12:48,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-22 16:12:48,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:12:48,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:12:48,638 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:12:48,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-22 16:12:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:12:48,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1429 conjuncts, 256 conjunts are in the unsatisfiable core [2021-11-22 16:12:48,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:12:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:12:50,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:13:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:13:41,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161231201] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:13:41,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:13:41,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256, 256] total 511 [2021-11-22 16:13:41,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444641147] [2021-11-22 16:13:41,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:13:41,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2021-11-22 16:13:41,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:13:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2021-11-22 16:13:41,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65792, Invalid=195840, Unknown=0, NotChecked=0, Total=261632 [2021-11-22 16:13:41,772 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) [2021-11-22 16:14:51,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:14:51,591 INFO L93 Difference]: Finished difference Result 1482 states and 1609 transitions. [2021-11-22 16:14:51,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2021-11-22 16:14:51,593 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 [2021-11-22 16:14:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:14:51,602 INFO L225 Difference]: With dead ends: 1482 [2021-11-22 16:14:51,602 INFO L226 Difference]: Without dead ends: 1353 [2021-11-22 16:14:51,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1788 GetRequests, 1024 SyntacticMatches, 0 SemanticMatches, 764 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128398 ImplicationChecksByTransitivity, 101.9s TimeCoverageRelationStatistics Valid=163583, Invalid=422407, Unknown=0, NotChecked=0, Total=585990 [2021-11-22 16:14:51,645 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 3871 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3871 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:14:51,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3871 Valid, 785 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 16:14:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2021-11-22 16:14:51,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1283. [2021-11-22 16:14:51,681 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) [2021-11-22 16:14:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1347 transitions. [2021-11-22 16:14:51,685 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1347 transitions. Word has length 640 [2021-11-22 16:14:51,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:14:51,687 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1347 transitions. [2021-11-22 16:14:51,688 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) [2021-11-22 16:14:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1347 transitions. [2021-11-22 16:14:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2021-11-22 16:14:51,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:14:51,700 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 1, 1, 1, 1] [2021-11-22 16:14:51,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-22 16:14:51,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-22 16:14:51,915 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)] === [2021-11-22 16:14:51,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:14:51,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1814097445, now seen corresponding path program 7 times [2021-11-22 16:14:51,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:14:51,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989510936] [2021-11-22 16:14:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:14:51,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:14:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:15:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:15:07,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:15:07,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989510936] [2021-11-22 16:15:07,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989510936] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:15:07,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150186790] [2021-11-22 16:15:07,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-22 16:15:07,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:15:07,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:15:07,432 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:15:07,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-22 16:15:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:15:07,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 2121 conjuncts, 193 conjunts are in the unsatisfiable core [2021-11-22 16:15:07,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:15:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:15:09,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:15:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:15:50,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150186790] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:15:50,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:15:50,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-11-22 16:15:50,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607324220] [2021-11-22 16:15:50,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:15:50,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-22 16:15:50,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:15:50,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-22 16:15:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-11-22 16:15:50,804 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) [2021-11-22 16:16:02,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:02,851 INFO L93 Difference]: Finished difference Result 2301 states and 2492 transitions. [2021-11-22 16:16:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-22 16:16:02,852 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 [2021-11-22 16:16:02,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:02,866 INFO L225 Difference]: With dead ends: 2301 [2021-11-22 16:16:02,866 INFO L226 Difference]: Without dead ends: 2300 [2021-11-22 16:16:02,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2100 GetRequests, 1718 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-11-22 16:16:02,878 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 2258 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:02,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2258 Valid, 1563 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 16:16:02,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-11-22 16:16:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 1919. [2021-11-22 16:16:02,933 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) [2021-11-22 16:16:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2173 transitions. [2021-11-22 16:16:02,939 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2173 transitions. Word has length 955 [2021-11-22 16:16:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:02,941 INFO L470 AbstractCegarLoop]: Abstraction has 1919 states and 2173 transitions. [2021-11-22 16:16:02,942 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) [2021-11-22 16:16:02,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2173 transitions. [2021-11-22 16:16:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2021-11-22 16:16:02,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:02,960 INFO L514 BasicCegarLoop]: trace histogram [255, 255, 255, 254, 254, 1, 1, 1, 1] [2021-11-22 16:16:02,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:03,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-22 16:16:03,171 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)] === [2021-11-22 16:16:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:03,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1643122905, now seen corresponding path program 7 times [2021-11-22 16:16:03,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:16:03,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869508255] [2021-11-22 16:16:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:03,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:16:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:17:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 161671 backedges. 0 proven. 161671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:17:18,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:17:18,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869508255] [2021-11-22 16:17:18,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869508255] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:17:18,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745368965] [2021-11-22 16:17:18,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-22 16:17:18,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:17:18,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:17:18,183 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:17:18,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f119dcb-2599-4f5f-bc2c-fb3a424f04b2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-22 16:17:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:17:18,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 2831 conjuncts, 511 conjunts are in the unsatisfiable core [2021-11-22 16:17:18,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:17:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 161671 backedges. 0 proven. 161671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:17:21,636 INFO L328 TraceCheckSpWp]: Computing backward predicates...